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Onion Weed

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John starts with ...
Hi Im about to start planting and found that i have a huge onion weed problem, its right through my lawn...everywhere. I've tried roundup but keeps coming back. Can anyone offer advice on how to get rid of this pest prior to planting.
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john8169
Sydney
18th September 2008 7:52pm
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Jantina says...
Hi John, failing any brilliant solutions from anyone else here are my suggestions.1, learn to live with it. 2,spray with roundup again (I loath the stuff myself) and when it comes up again mulch it heavily and whenever a bit comes through mulch it again until it gives up.Onion weed is a little bulb and if the leaves cannot get to sunlight to photosynthesize it will eventually starve and die.3,simply repeat the above mulching steps without the roundup(that would be my choice). If you put cardboard down first and sheetmulch over that it makes it that much harder for the onion weed to come back up. lots of luck. p.s. you must be vigilant about any bits that come back up or it will take off again. Jantina
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Jantina
Mt. Gambier S.A.
20th September 2008 2:50pm
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peter says...
pouring boiling water on weeds is
supposed to kill them.
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peter30001
adelaide
20th September 2008 8:35pm
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Scott G says...
The onion weed bulbs are usually only a few cetimetres below the surface carefully slicing the topsoil away and disposing of it should take the bulbs with it. This is assuming that the soil hasnt been disturbed thus mixing the bulbs throughout the soil.

Otherwise I would expect a good infestation of onion weed to take a few years of routinely applying roundup to kill. Not all bulbs have leaves all the time. So while many get sprayed many stay dormant and sprout up later.

John: are you sure you have onion weed (Nothoscordum gracile) in your lawn and not Nut Grass?
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Scott G
The Gold Coast
21st September 2008 12:06pm
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John says...
thanks for this everyone, pretty sure its onion weed scott. there is a small bulb at the bottom and when i extract them carefully it reveals its 'babies' sometimes about 50 little ones all attached to the main bulb. i guess i didnt get the answer i wanted but at least i know... its going to take years!
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john8169
Sydney
21st September 2008 8:20pm
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trikus says...
Its called nut grass up here , and the old round-up , will only set it back a little . Special spray for it costs a fortune .. nearly $100 for `100ml .. its better to just shade it out and learn to live with it .
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trikus
Tully
21st September 2008 10:39pm
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Scott G says...
A word of caution when digging up Onion Weed. Many of the bulbs are whitish and are easily seen. But dormant ones can be dark brown and very small. These ones hide well in dirt. So be careful what you do with soil that you THINK you have removed all the bulbs from.
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Scott G
The Gold Coast
23rd September 2008 12:13pm
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lolo says...
I had a huge problem too, but it is decreasing every year. I go around each week and pull it back to ground level. The bulbs need the green part to photosynthesise, as someone else mentioned, so if you starve it by just yanking at the green each week, you get rid of it after about 3 goes. Eventually (after 3 goes) the bulb is so skinny it comes out with the leaves. That way, you get rid of it without using poison. I got rid of blackberries using the same method.
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Tasmania
23rd April 2009 6:20pm
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rose says...
you know its onion weed by the smell it smells like onions
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24th June 2009 4:24pm
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Steve says...
I found out the hard that you never try to dig out the weed as it will only spread at twice the rate of your effort.
The best way I found was to use a small paintbrush to apply a little roundup/glysophate onto a couple of leaves.
Don't dilute the glysophate - use it at 100% straight from the container.
It works every time.
It's time consuming if you have a lot of weeds, but it works.
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Steve
Coffs Harbour
24th June 2009 8:02pm
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Russell says...
Don't confuse onion weed with nut grass they are not the same. Nutgrass is much worse as a weed, apparently the world's worst weed. It spreads through the soil like cooch grass but creates 100s of tiny round brown nuts, all of which will grow. It can take over and ruin an entire farm if let go. Some farmers will remove the enire soil from where a patch of nutgrass is found and burn it on top of a bonfire. Cultivation only spreads it making the problem worse and most sprays, including roundup, only set it back a while. Back to onion weed: (little white bulb with strong onion aroma)The best way to eradicate it from your garden or block is to go round each year in late winter/early spring, when it flowers, with a curved garden trough and bucket, and dig up the bulbs. Generally the soil is moist at this time of year and the bulbs will come out easily with a slight loosening. Don't shake the soil off but throw the whole clump into the bucket then either burn it on a bonfire or bin it. Some bulbs do remain dorment for a season but sooner or later they give themselves away by flowering, their flowers being like little white flags that wave to you the reality of their presence. It is very helpful of them to surrender in such a way. Do this for a few seasons and your block will be onion weed free.
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Russell3
Mt Evelyn, Vic
30th August 2009 5:35pm
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Russell says...
Actually having just been out doing my anual onion weed eradication hunt, and being hit again with the strong onion smell, stronger than normal onions and on a pa with fresh crushed garlic, I wonder whether the common and often maligned onion weed might have a constructive use as a deterent insect spray as with garlic spray. Perhaps if they were washed then put through a juicer, or blender and sieve, the juice sprayed on insect prone plants may be a very good organic insecticide. Could it be that the gardener's enemy turns out to be his best friend?!!
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Russell3
Mt Evelyn, Vic
30th August 2009 9:18pm
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VLR says...
I have onion grass in my lawn that I dig out very carefully (the bulbs tend to detach and remain in the soil if I pull the leaves too hard). It's hard work but there seems to be a lot less this year than last year (I only moved into my new place last year). Whatever method you try, definitely get to them before they go to seed. Are they poisonous to dogs? My dog likes to "help" with the gardening and flings them around though I take them off him before he eats it.
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VLR
Perth
31st August 2009 12:12am
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Russell says...
Aparently they are edible so they shouldn't hurt the dog.
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Russell3
Mt Evelyn, Vic
6th September 2009 9:43pm
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kylie says...
i have 5 acres which is totaly covered in onion weed, it's in the garden beds every where, i hate it, but can anyone tell me is there an animal out there that eats it. horses and cattle don't, i am now trying goats and sheep, but they don't seem to be doing much either, some one told me if you just keep mowing it, it will eventually die off, is this true.
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kylie3
geelong, vic
14th September 2009 4:59pm
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Clare says...
I have spent today pulling up onion weeds and wonder if they can be put in the compost bin where there is no light? Also am I wasting my time as the neighbours seem to be leaving theirs to do their own thing?
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Clare3
SA
14th September 2009 10:31pm
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Jantina says...
Hi kylie, it's a bulb so if you constantly remove the green above ground part it will weaken and die but mowing would probably leave enough green leaf for it to continue feeding the bulb, my feeling is that it might slowly weaken the bulb but could take years and you'd still probably have some. Clare, unless your compost is very well managed and reaches very high temperatures the bulb will survive. I'd put them in the fire or in the rubbish bin.
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Jantina
Mt. Gambier S.A.
15th September 2009 12:00pm
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sunshine77 says...
onions and garlic are both poisonous to dog small amounts of either one can cause renal failure in some individuals
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sunshine77
 
17th September 2009 12:16pm
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amanda says...
I hope it's OK to ask a chook question 2? ... is there anything that is No-No for feeding chooks? I have never had them b4. U are right about the onions n dogs sunshine77, BTW.
We had a tame parrot and avocado was strictly off the menu...

For the onion weed - I would glue/stick some sponge bits onto the thumb and forefinger of a pair of rubber gloves - put them on, dip them into NEAT glyphosate and "wipe" all the leaves with it. Much quicker than a paintbrush? Not much good for 5 acres tho' Kylie! :( Have u thought about biting the bullet and nuking the whole lot and then starting again with a heavy sowing of perennial grass seeds?
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amanda19
Geraldton. WA
18th September 2009 10:27pm
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Original Post was last edited: 18th September 2009 10:36pm
nissa1054 says...
One of my goats ate the onion weed right down. However because I don't have him anymore, they have come back good and strong.
Onion weed is not a member of the onion family, it gets its name because of the smell, so it is not harmful to dogs.
It seems some goats are better at controlling the weed that others - cashmere and boer crosses are two that come to mind.

Good luck with the onion weed problem. Looking at getting another goat, hopefully it will eat the weed down ...lol
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nissa1054
melbourne VIC
3rd October 2009 3:58pm
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Colin says...
Re Onion Weed. Am I likely to spread the plant by mowing over the flowers and adding the cuttings (with grass) to my compost???
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Melb
21st October 2009 1:50pm
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Jantina says...
Only if your mowing clippings includes flower heads that have set seed.
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21st October 2009 3:38pm
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Colin says...
Thanks Jantina,

How do I tell if the Onion weed has set seed? most seem to just flower then wither and die. I haven't really seen the typical seed heads of most other weeds.
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Melbourne
22nd October 2009 4:42pm
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Brad says...
Someone will correct me if this is wrong but I think that the little brown spherical seeds are in green cylindrical pods (on stalks).

I seem to recall shelling them in school on the oval...
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Brad2
Perth
22nd October 2009 7:34pm
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Jantina says...
Correct Brad.
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23rd October 2009 4:54pm
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Colin says...
Brad, Jantina, thanks.
On checking the flowers I found tiny seeds hiding inside. I'll give the old Onion weed 10 out of 10 for resilience, tenacity and perseverance. Until they start sprouting small arms and legs and carrying tiny uzi's, my mission is to destroy them.
Bring it on Onion Weeds.
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Melbourne
26th October 2009 9:50am
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Mary says...
It may be a deadly question but can onion weed edible? The reason I ask was seing a group of people picking a bunch of wild onion weed flowers, I only hope it was just for fun but did not want to approach them.
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Sydney
26th October 2009 10:15pm
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Steve says...
I tried digging out onion weed & only succeded in generating more plants. I found wiping some leaves with straight glysophate, using a small paint brush was 100% successful. I'd hate to have 5ac of this horrible weed.
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Steve
Coffs Harbour
29th October 2009 9:42am
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Louise says...
I was advised only this morning that the best way to get rid of anything that has a bulb or any weeds in general is to sterilise the soil by using a product called Zerdane. It will kill the seeds under the soil including the dormant ones and was told if I had nutgrass to give it two shots about a week apart, leave it for 4 weeks and then dig them up. I would think that it will kill all plant seeds so may not want to try it on lawn or do a test patch first??
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Adelaide
9th December 2009 2:55pm
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Julie says...
I wonder if this would work for oxalis - 'sour grass'. But if it kills the seeds/bulbs, why do you have to dig them up?

I have about 1/2 acre of this obnoxious weed, so I wouldn't have a hope of digging them all. I will look into it.
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Roleystone WA
9th December 2009 3:12pm
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Julie says...
Louise, are you sure you have the right name? I did a Google search for Zerdane and it seems to be DDT! Where did you hear about this?

I haven't come across anything that will kill off oxalis - maybe I should start another thread.

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Roleystone WA
9th December 2009 4:07pm
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Russell says...
Oxalis is another weed that has the potential to take over a property if left unchecked. Like onion weed it multiplies in two ways by seed and by growing new baby bulbs around the mature bulb. Also as with onion weed cultivation only spreads it further. Though it is backbreaking work the best way is to carefully dig it up and burn the bulbs. Don't try to shake all the dirt off the bulbs as you will undoubtably shake off tiny bulbs as well. Through plants into a bucket then burn it on a bonfire. A good soaking of deisal helps this process well. These weeds, nutgrass, onion weed and oxalis need to be treated like a cancer that is spreading through your property. If left unchecked they can render the property useless in terms of cropping or gardening and greatly decrease its value. There are farms in the Dandenong Ranges that are completely overun by these weeds because the owners did not take the neccessary trouble of digging up these weeds when they first appeared in a small patch on their farm, generally accidently brought in on equippment or in soil around purchased plants. Now is the time to dig up oxalis as it is flowering (white flowers)and has the distinctive clover like leaf. Back to onion weed, you will have to wait to next spring to attack that, when it flowers again. Our half acre house block was littered with it when we bought it. We paid the kids per bucket to dig it up, which they got into. Now I systematically recheck it every year and have virtually wiped it out. Even five acres can be done with a systematic approach.
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Russell3
Mt Evelyn, Vic
15th December 2009 10:54pm
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kate says...
I've been attacking near to two acres of onion weed without the use of herbicides and it's a slow process that you need to remain vigilant at, but it *is* doable!
Dig up the bulbs by hand as soon as they appear when the weather cools! I spend my Autumn and Winter systematically digging up the bulbs and the earlier in the season, the better! Later in the season, the older bulbs grow little bulbils which can easily become detached and remain undetected in the soil, when the main bulb has been removed, ready to grow the next season!
Keep on top of cleared areas! If the weed appears in a previously cleared area, dig deeper to remove it!!! It's quite likely that you detached the bulb whilst you were digging and in my experience, the older the bulb, the deeper in the soil it sits! An older bulb will be bigger and the blades will grow stronger and longer! Newly seeded bulbs grow fine tiny blades that won't flower for another season, but can easily be overlooked, because they may blend in with other grasses or 'good' plants!
Later in the season, pull off any flowers and bin them! I patrol my block as often as possible and try to pull them off before they bloom! A flower left to seed creates a 'grove' of about twenty tiny 'blades' that will be even more difficult to remove come next Autumn!
If neighbours aren't as vigilant at removing their weeds, create a mulch barrier- strip a few feet wide! The flowers tend to seed in fairly close proximity to the plant. (I just sweep all the autumn leaves into a ten foot strip down the boundary line!)
And lastly, mow/whipper snip the blades as the weather is warming! *Not essential, but it *does* reduce the 'fuel' returning into the bulb once the growth has died off in late Spring.
Hope this helps!
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kate11
Melbourne
2nd July 2010 3:30pm
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Liz says...
A commercial olive grower told me that sour grass thrives in sour soil and treating the soil with lime or dolamite would make a difference. Has anyone tried this?
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Liz13
Melbourne
28th August 2010 6:40pm
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Julie says...
Liz, that might be true - the soil where I live is fairly acid in parts, and the oxalis has taken over.

But I have seen sourgrass growing just as well near the coast, on sandy,limy soil in WA.
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Julie 1
Roleystone WA
28th August 2010 8:07pm
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dnaplscraple says...
Two options I can recommend.

1. You can use non dilute white vinegar, pored directly on each onion plant. The low ph will knock out the onion grass. You would need to take care and in time, get the problem solved.

2. Cover the with a geotextile (we use 4 layer of newspaper covered with a mulch) used for weed prevention. This will cut out sunlight and kill off all vegetation. The fabric will need to smother the area for at least 4-6 months.
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dnaplscraple
Sydney
28th August 2010 8:30pm
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stuart says...
"Oxalis debilis var. corymbosa and Onion Weed Nothoscordum gracile growing in lawns are so easy to eradicate. Find where the leaves emerge from the ground and dribble machine oil onto them so that it can coat and smother the bulbs to death."

Found this on ABC's Gardening Australia website fact sheet for organic weed control.I am going to give it a go on a trial patch of my lawn.
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stuart3
Dubbo
11th September 2010 5:51pm
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John Mc says...
Any problems with the machine oil contaminating the soil Stuart? Would Olive oil or other vegetable oil be just as effective?
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John Mc
 
11th September 2010 6:41pm
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stuart says...
I don't know, that's why I'll just trial it on a small patch at first, it's only a dribble, enough to coat seeds, and I don't want to spot Roundup as in the past when I have done that inevitably a small patch of lawn around the weed dies too.
I'll see how it goes for a few weeks, Ijust want to kill it before it flowers.
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stuart3
Dubbo
12th September 2010 7:38am
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tomm says...
I have just used a product called destiny to kill my onion weed in my soft leaf buffalo. It has been a week and it is now starting to turn yellow with the lawn looking good.
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tomm
 
22nd October 2010 6:11am
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j says...
Normal Roundup gets onion weed turning yellow too. Tomm, let us know if that product gets rid of them completely.
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J
 
22nd October 2010 11:39am
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kert says...
From a toxicity perspective I am not sure engine oil is to be preferred to Roundup. Used engine ie sump oil picks up some heavy metals as well.
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sydney
22nd October 2010 3:26pm
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amanda says...
Unless u plan on eating the lawn then what's the problem? ;-)

(ps kert - u are slipping up sweet!? xx)
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amanda19
Geraldton Mid West WA
23rd October 2010 11:59pm
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Original Post was last edited: 24th October 2010 12:03am
peter says...
the bags of blood and bone i have used
in the past says that frequent use can
cause a build up of heavy metals in the soil.
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adelaide
24th October 2010 8:54am
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tomm says...
In my case I have an enormous problem of onion weed in my lawn. There is no way I am spending months trying to eradicate it. The beauty of the destiny is I mix it and spray it with no damage to lawn unlike roundup.So far it has got rid of a couple of other types of weeds but has left a couple of other types. The onion weed is slowly dying off. I am sure I will need a few applications over time to completely get rid of it.With Christmas around the corner and my father In-law arriving who judges my character on how well my lawn looks I am starting to grin already :)
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tomm
 
25th October 2010 7:54am
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amanda says...
Phew - finally got here! I just read in the weekend paper (Sabrina Han?) about Urea killing off onion grass and bulbs? Urea would make that lawn very nice for F.In-Law tomm! (just don't over do it though - you may burn out your lawn too)

Apparently the urea burns out the bulb.
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amanda19
Geraldton Mid West WA
25th October 2010 9:14pm
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tomm says...
job done onion weed dead :)
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tomm
sydney
1st November 2010 2:05pm
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markd says...
tom that destiny stuff is pretty dangerous - also goes by the name of Hussar with the active ingedient iodosulfuron-methyl-sodium. I have been looking for a solution for a client and having read up just now I won't be using destiny.
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markd
medina
7th November 2010 2:52am
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Rob says...
I have a newish Sir Walter lawn. It came up with tons of onion weed after it was laid down. I tried a couple of different herbicides without any success- after finding most kill buffalo lawns(like Sir Walter). Nurserys also told me I just had to live with the weed.
Eventually I found Amgrow Chemspray Bin-Die which is Buffalo safe, mixed it with a little detergent (I read it helps to penetrate the waxy leaves) and put it into a spray bottle - used on jet to target just the weeds. In days the onion weed turned yellow/brown and started to shrivel - zero lawn damage. I mowed the lawn after a week or so and then sprayed any new onion weed leaves that sprung up, another week or two, mowed again - have not seen any more onion weed since. Seriously took no more than a couple of hours in total. Of course I am waiting to see if any new shoots come up, but so far so good
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Rob11
Sydney
11th November 2010 2:01pm
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snottiegobble says...
I dont have onion weed but I do have a very invasive mainly red leaved oxalis with yellow flowers.It has small leaves & tends to thrive in potting mix so I believe it came with plants from nurseries. Now its a bloody nuisance in my above ground vegie garden as it tries to suffocate long season plants like onions, garlic etc. Of course when you remove it their roots become exposed. Anyone know its specific name?
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snottiegobble
Bunbury/Busso (smack in the middle)
12th November 2010 2:45am
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amanda says...
Snottiegobble - it's not "creeping oxalis" is it? Julie put me onto it as I had the same problem from nursery plants. I googled the image and it was a match.
Try this in the google field

creeping oxalis image
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amanda19
Geraldton Mid West WA
12th November 2010 12:43pm
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snottiegobble says...
Thanks Amanda , thats one of them & the LEAST invasive! The other`s leaves & flowers are similar, but it is a lot darker with washed maroon over the green leaves. The seed pods are pea green, 8cms long, 5 sided & pointed. It forms dense mats & loves bricked paths like I have down the centre of the vegie patch. Dont want to use roundup but, see no options.
On the same vein the ocas ( oxalis tuberosa) are going really well Charles. They are over a foot high & I am hilling them up as they grow. They are already shaded by shade cloth.
Thank God they dont behave like their relatives eh? How is yours Amanda? Jantina`s oca is just showing thru.

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snottiegobble
Bunbury/Busso (smack in the middle)
12th November 2010 1:46pm
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amanda says...
Hey Snottie and Jantina - I raced out to check my oca after I saw your post Snottie and it has a shoot! I am thrilled to bits :) Now to keep it going to share with others also. Thanks jantina.

Snottie - can u take a pic of the weed? If you post it in the "What is it?" thread someone will be bound to know.
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amanda19
Geraldton Mid West WA
12th November 2010 6:20pm
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snottiegobble says...
Will do Amanda. Just need a little time. I have been potting up ferns for my cafe friend`s courtyard to go round her water feature. Gee, these solar fountain pumps are really good for the money.
Watch out for snails & dont forget to shade your oca first sign of really hot weather.
Anyone know what the oxalis type plant is that blooms prolifically in clumps in the autumn with bright yellow attractive flowers on long stems?
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snottiegobble
Bunbury/Busso (smack in the middle)
12th November 2010 8:19pm
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Julie says...
Soursob is the common name - Oxalis pes-caprae. I have about 3/4 acre of the stuff and no hope of getting rid of it. It has completely taken over and taken the place of the good weeds that used to be there.

By 'good' weeds, I mean ones that can be whippersnipped and used as mulch. This stuff dies down to nothing.

Any ideas someone?
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Julie 1
Roleystone WA
12th November 2010 9:26pm
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amanda says...
Julie, do you think the Urea trick that Sabrina Hahn mentioned for onion weed might work on oxalis? It apparently burns out the bulb in onion weed.
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amanda19
Geraldton Mid West WA
13th November 2010 11:52am
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Julie says...
I'll try that on a small patch next year amanda. Can't do any harm!
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Julie 1
Roleystone WA
13th November 2010 8:04pm
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amanda says...
Yea Julie - I reckon it's worth a shot? I was thinking the granular form put directly on top on the plant and then just a tiny bit of water to take it down without diluting it out too much?
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amanda19
Geraldton Mid West WA
13th November 2010 11:14pm
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tomm says...
thanks Markd,
hussar and destiny are two different products, destiny just uses the idosulfuron-methyl-sodium where the hassar uses it along with several other chemicals.I have read both MSDS's and as long as you dont eat it, bath in it or fill your fish pond with it and follow the directions I am pretty sure you will be ok. If you read the MSDS on oven cleaner you would not use it either.
however the lawn is looking great and that is the most important thing :)
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tomm
 
15th November 2010 5:56am
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russell says...
Urea is the main nitrogen-containing substance in urine. All this time and money wasted on hard work and expensive chemicals when maybe we just had to go out and pee on the onion weed!!! LOL P*#d Off!!
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27th November 2010 10:47pm
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natalieschwab says...
Hi everyone, my name is Natalie and I am writing a story about onionweed for the Tombston Epitaph, as it is becoming a big problem in Arizona. Would any of you be willing to do a quick interview with me for the story? We can do it over phone or email, whichever you prefer. I just wanted to talk to some people who have dealt with the issue in their lawns/gardens and have tried to get rid of the weed. Please let me know ASAP as this story runs Friday. Thanks!
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natalieschwab
Arizona
25th January 2011 6:33am
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John Mc says...
Hi natalieschwab,
You will find just about everything you need to know if you go back through these posts. I don't think any one person could give as much information as posted here.
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JohnMc1
 
25th January 2011 8:17am
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Jennifer says...
Hi Onion weeds keeps growing with my srouting onions and I use the green from them daily I am a little worried about eating onion weed,I have read it edible although I am not sure that the information is correct..is it true or could onion weed be used for healing as I will just eat it too..I think i am chopping it up with the other onion.
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Jennifer5
Sydney Australia
10th May 2011 2:51pm
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Bev asks.... says...
My new garden is heavy clay and is infested with onion weed. Tried carefully digging it out and using Round Up, but altho I have gotten rid of the big ones, babies have arrived. Should I grow loads of groundcovers to crowd them out and smother them as well as place loads of mulch on top of them?
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Bev asks1
Bedford, Eastern Cape
26th May 2011 7:21pm
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Charles cant spell says...
Treat them as a source of onion, its free grows well and saves you growing more difficult and longer to yield onions. As like everything once you decide its perfectly edible and start using it a few times weekly, it would be long before your running out of that weed. Mulching them while it might smother it, wont kills the bulbs, and they seem to last a few years. Don't eat the ones you have round ups though.
You could out compete them with Garlic Chives, the intermingled leaves can be harvested at the same time and it would be irrelevant, due to the nature of the matted garlic chives roots I recon it would out compete eventually.

In Pemby we have 5x5 meter patches of the stuff, so short of smothering and solarising its a case of remove the majority and keep coming back to it.
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Charlesstillcantspell1
Perth Innaloo
27th May 2011 1:14am
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Simon says...
Rob - just about to launch into my own Onion weed problem. where did you buy the Amgrow Chemspray Bin-Die?
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19th September 2011 12:13pm
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Simon says...
Tomm, where did you get this Destiny product?
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19th September 2011 12:15pm
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Jimmy says...
Try global products
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20th September 2011 4:02pm
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tomm says...
i got the destiny from globe, they are a turf management company in all states. i had great success with this product. it is expensive, about $200 but this is enough to supply half of sydney. another guy was saying it is dangerous but no animals or people were hurt from my use.
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tomm
sydney
22nd September 2011 3:21pm
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ringelstrumpf says...
do you know the latin name for this plant? Then you could look up in "PFAF" maybe it's edible? Provided correct identification.
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ringelstrumpf
Mountains
22nd September 2011 5:49pm
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newthumb says...
I have a huge onion weed problem in the lawn at our new rental. As I dont want to spend a lot of money on it I was wondering how u used the urea?
Have only been here a few months but havent seen any flowers yet
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newthumb
Perth WA
29th September 2011 5:26pm
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frankie says...
Avoid the temptation of pulling it out, if you do pull it out it will quickly multiply. Each strand of onion weed has numerous dormant bulbs beneath the surface, pulling the strand out activates these bulbs. All you can do is patiently paint the strands with roundup or zero. Sorry for the bad news, I found out the hard way.

Cheers
Frankie
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Frankie
 
29th September 2011 9:25pm
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Wazzbat says...
I sprayed mine today with Glyphosate (roundup, zero etc etc). I will keep doing that now until it is all gone!!! I'm preparing for a long drawn out battle. It's nasty stuff!

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Wazzbat
Vic Park WA
29th September 2011 10:09pm
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Kasta says...
I also have onion weed EVERYWHERE. One garden bed ended up covered after I spent ages digging them out one-by-one before planting carrot and sweet pea seeds. I got no carrots or sweet peas but increased my onion weed population 10-fold. This was despite me thinking I got every one, including the babies. So, I am going to dig the whole bed out, lay down lots of sheets of newspaper/cardboard and then put new soil and compost on top - at least 30cm worth. It is a 13m x 1m bed so will take a while. :) As for the onion weed in all my other garden beds I am going to try to shave off the tops until the bulb eventually "starves". I can't dig out the entire bed because they already have established plants in them.
I hate this weed with a passion!
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Success1
 
1st October 2011 5:04pm
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Jon says...
I've been upending my turf with a spade and pulling the onion weed out by the bulb. Does this have the same danger as digging it out? It is most satisfying pulling out a large plant by the bulb!

Before I laid my Sir Walter this time last year I read that the soil should have bee "nuked" with weedkiller, covered with plastic and left for a few weeks before rolling out the turf.

This seemed like overkill . . . fortunately the onion weed is mostly around the border of the lawn so I can turn over the turf to remove the bulbs without causing too much obvious damage.

It is an evil weed though.
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Jon9
Sydney
17th October 2011 9:43pm
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Original Post was last edited: 17th October 2011 9:46pm
TreeBee says...
Onion Weed!!!! I hope you have success in keeping on top of it John. Nothing is 'overkill' when it comes to Onion weed. I hope it doesnt overrun your lawn. You can always have another go or treat sections. Try a Pine oil based weedkiller and smother the area in black plastic in the heat of summer and let it fry for as long as you can, then sow an Autumn lawn. Best of Luck.
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Swishtree
Gippsland, VIC
17th October 2011 10:23pm
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Original Post was last edited: 17th October 2011 10:25pm
Albert says...
I have just spent a day spraying half my onion weed patches over 2 acres. Round up is suppost to kill onion weed if sprayed just before or during flowering. I used a 1.5L soft drink bottle with the bottem cut out as a shroud over the end of a spray nozzle. This goes over neatly the flowers with a fine mist.
I might find dead perfect round patches over the paddock and lawn in a few months but in will be worth it:)
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Albert2
Moura QLD
20th October 2011 4:05am
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Stephen says...
Like Rob I also used Bin-Die with good success in eradicating onion weed in Sir Walter & King's Pride Buffalo lawn.
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Stephen6
 
20th October 2011 9:58am
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Cathy says...
There is loads of good advice here but I am unsure what would be the best approach to take with onion weed that has invaded the garden and is coming up all around and through my rose bushes. What is the safest way to attack it without damaging the roses? I am concerned that even if I wipe Roundup onto the onion weed leaves they might then fall against the rose bush and poison it too! (Some of the roses have sentimental value otherwise I might be tempted to rip them all out, napalm the garden and start again!)
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Cathy8
Sydney, NSW
7th December 2011 10:08pm
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pete says...
tell me everything about omion weeds
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port augusta
12th December 2011 11:57am
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glenn says...
I dont use poisons so what i do is cover them with a thick layer of mulch .
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brisbane
12th December 2011 12:46pm
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James Plant Man says...
Guinea fowls eat fresh sprouting onion weeds as they appear, I have seen this with my own eyes. Good Luck
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James Plant Man
south africa
8th January 2012 7:50pm
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Selene says...
Stop trying to get rid of your onion weed. It is FREE FOOD! Eat it. It is sooo good for you and has so many anti cancer properties!!! It tastes just like onions and can be used in egg dishes, risottos, pasta etc...
Please stop using toxic chemicals on your earth!
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Selene
 
2nd April 2012 10:02am
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Selene says...
Stop trying to get rid of it with poisonous toxic chemicals! Eat it!!! It is a lovely edible and nutritious herb which as anti cancer properties!!!
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Selene
 
2nd April 2012 10:03am
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Jon says...
It is more than six moths since I upended the turf and removed the onion weed. None has returned to the previously affected areas and only a view onion weeds now exist anywhere, and they are removed when small.

When I cut the taller grass near the garden beds I take the resulting "straw" and lay it around the plants to stop weeds taking hold.

All going well, so far.

I will let you know if the dreaded onion weed emerges in winter.

All the best
Jon
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Jon9
Sydney
3rd April 2012 2:13pm
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Success! says...
I am pleased to say that digging out the entire garden bed, even around existing plants, then adding a layer of wet newspaper before filling with new soil has worked really well. No more onion weed or any other out of control weeds for that matter.
I am now contemplating doing the same with my wildflower garden which has been overrun by onion weed. I find that if the problem is large enough then poison does not work as it ends up seeping on to the plants too. Plus poison isn't good for the lizards or the little insects either.
Good luck everyone!
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Success1
 
8th April 2012 12:21pm
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Seliment says...
Could someone please clarify what is "Onion weed". We have a weed everywhere in the Dandenongs. Its botanical name is Allium trifolium, and (proper) common name is "angled onion'. Many ppl (wrongly) call it various names including 'angled onion weed' and 'onion weed'.

Af far as I know, there is a completely different plant which is a declared noxious weed in South Aust which is called 'onion weed' in legislation.

Angled onion is a plant which smells of onion, grows from a white bulb to a plant about 20-30cm with strappy leaves and has white bell shaped flowers with black seeds. Will grow/spread from either bulb or seed.

Which plant are we talking about please?
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seliment
Mt Dandenong
17th April 2012 11:11pm
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seliment says...
Sorry, I made an error ..
The botanical name of Angled Onion is Allium triquetrum.

A good reference site is:
http://www.southgippslandweeds.com.au/gallery-weeds/angled-onion/

Joe

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Picture: 1
  
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seliment
 
17th April 2012 11:41pm
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Nick says...
I've got this plant growing in the shady areas of my garden! It dies down over summer, then starts growing around now with beautiful flowers in spring. Shame it has a tendency to become weedy... I heard somewhere its edible?
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Nick T
Altona, VIC
18th April 2012 7:21am
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annie says...
I had a thought the other day regarding onion weed which is rampant in all my gardens. After rain, there seems to be more than triple the number of plants. As they come up close to my vegetables and other plants, I am not sure what to do for the best. Maybe a small hand held spear gun with a hole in the end that would shoot the chemical on the bulbs of the onion as well as those annoying little seeds they leave behind. But where would I find one, other than trying to make it myself? Goodness knows how. Anyone any thoughts? Annie
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annie7
Ballina NSW
3rd June 2012 4:02pm
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Seliment says...
Apply straight glyphosate to leaves with a 'dabber' bottle which are often avail for free from the environment dept of your local council.
The bottles are actually ( new) shoe polish bottles with the foam applicator on the top.

Best time to apply is just as flowering is about to start as that is when old bulb is depleted and new ones have not net formed.

By the way --- angled onion is edible -- was reported as such in Epicure section of The Age recently and apparently is widely eaten in Europe.
Pity they didn't keep the pest plant there!

Joe
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Seliment1
Dandenong Ranges
8th June 2012 6:58pm
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Ryanbuda.hubpages.com says...
Wild onion grass is a really tricky plant. On the one hand, You can eat onion grass. Check out my page on Hubpages where I talk about eating it)

http://ryanbuda.hubpages.com/hub/Edible-Wild-You-Can-Eat-Wild-Onion-Grass

But if you want to control onion grass, it is difficult because it is a weed I address that to:

http://ryanbuda.hubpages.com/hub/Wild-Plants-What-is-Onion-Grass-and-Wild-Onion-Grass-Control
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Ryanbudahubpagescom1
Connecticut
18th July 2012 6:47am
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Ethanhh says...
To get rid of onion weed, you have to prevent the bulbs storing food for growth. Onion weed can also produce seed. Cutting off the foliage at ground level will prevent the plants making carbohydrates in their leaves, and also prevent seed forming.In an unused garden area, you can do this by slashing, or mowing, the foliage to ground level, then covering the area with black plastic for several months. Anchor the edges of the plastic with planks, bricks or whatever you have to prevent it blowing away. Deprived of moisture and the sunlight that enables it to store carbon dioxide as carbohydrates (photosynthesis), the bulbs will weaken and die.
http://www.greenlawnturf.com.au/
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Ethanhh
NSW
22nd March 2013 4:47pm
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Original Post was last edited: 22nd March 2013 4:47pm
jennyr says...
Small area. Dug up and sieved the soil to depth of 800 cm, put it in an Otto bin for three months and the onion weed was still sprouting at the bottom of the bin when I emptied it. No water, air and covered with 2 metres of soil and they still survived!!! admittedly only two bulbs but very frustrating. No more onion weed now. Whew!!!
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jennyr
 
26th July 2013 6:56am
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MJ says...
I dug up a whole lot and got rid of the soil as best I could. Then I put thick newspaper down and mulched over it. A few are coming up here and there and I need to spray them. In a week or so, when it stops raining... It has reduced the number a lot.
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76
 
26th July 2013 10:56am
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Littlefrog says...
I have controlled onion weed successfully by hand pulling large infestations when it is flowering. This is the only time of year that the bulbs come up (mostly - 95%) with the stems. Pull gently, dont yank.
This is no more work than individually poisoning each plant, or removing the topsoil, and very satisfying to see an infestation dwindle and disappear over 3 years.
The problem with the glyphosphates is they destroy the necessary fungal activity in the soil, and then you get more problems.
Cheers - Littlefrog.
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Littlefrog
Nangkita. S.A.
23rd June 2014 9:38am
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darwin says...
use super as it makes the bulbs grow to quick and they self distruct tried and it works.
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darwin
glengarry
5th July 2014 9:46am
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Julie says...
Would this work with oxalis - soursob - do you think? My block is overrun with the damned things.

Like onion weed, they are a bulb, and only digging gets rid of them. Even then, any tiny bulb left behind grows on, so it's almost impossible to get rid of them.
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Julie 1
Roleystone WA
5th July 2014 11:02am
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denise1 says...
Along with advice above, Make a avo each week to nip any leaf regrowth and this eventually starves them
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denise1
auckland NZ
5th July 2014 11:47am
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Jet says...
I saw my Rabbits like to eat it. So I thought I'd try. In the spring, when greens are expensive and not very nice, it's fine. Here's a recipie. Pull up the whole plant, little white bulbs and green stems. Steam it, till it's hot and wilted (2 minutes).Make a sause with peanutbutter and chilli sauce (tabasco or similar). Pour the suce onto the onionweed. A nice starter, inexpensive, tasty, nutritious. Also you can chop it up and add it to salad leaves or put it on top of soup as a garnish.
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Jet
haringey
8th September 2014 1:41am
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Original Post was last edited: 8th September 2014 1:43am
Brain says...
You should be commended Jet! Beats putting into the compost and only to have some of the bulbs survive and grow again.
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Brain
Brisbane
8th September 2014 12:59pm
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