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Avocado branches black

    5 responses

coll starts with ...
Hi new to forum any help please.
Planted a grafted avocado about 12 mths ago. Was growing well until wallaby ate all the leaves.
Leaves started to grow back well this spring but have now stopped growing and all branches are going black.
Any suggestions to help ?
Tyou
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Picture: 1

Picture: 2

Picture: 3
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coll
GREEN PIGEON 2474 NSW Australia
12th October 2021 6:37pm
#UserID: 28120
Posts: 2
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Original Post was last edited: 19th October 2021 10:22am
Avo L134 says...
From the pics, it appeared that your plant has/had flower buds. The blackening of the branches is likely the result of it being exposed to the sun. As you mentioned that the roos stripped your plant of leaves now exposing it to too much sun and "sun burning" your plant.
You need to put some sort of shade cloth and protect your young plant from the sun.
An unprotected plant like yours will not likely survive the summer.
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Avo L134
WEST WOLLONGONG,2500,NSW
18th October 2021 11:17am
#UserID: 24550
Posts: 56
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Original Post was last edited: 18th October 2021 11:19am
coll says...
Hi Thank you very much for your reply.
Yes we agree it could be sunburn turning the branches black.
We will put up a screen cover to protect the plant.
Cant work out why our other avo plant planted same time, same area, same sun, eaten by roos same time is doing well ?
Its new shoots all grew but the other plants new shoots arent growing and branches black.
Have added 2 more pics showing both plants together and the other plant doing well.
Any answers are much appreciated :-)

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Picture: 1

Picture: 2
 
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coll
GREEN PIGEON 2474 NSW Australia
19th October 2021 10:41am
#UserID: 28120
Posts: 2
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Avo L134 says...
I believe it has something to do with the flowering buds. The poor looking one looked like it has/had flower buds developed/bloomed. When a plant develop flower buds/bloom, a lot of their energy is funnelled into these flower and putting stress on the tree, especially if its been attacked/eaten ie wallaby.
The other plant does not seem to had flower, hence all its energy is directed at its leafs.
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Avo L134
WEST WOLLONGONG,2500,NSW
21st October 2021 4:16pm
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Edward3 says...
Is it possible that the black surface is sooty mold? You could try spraying with an appropriate fungicide.
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Edward3
CARLINGFORD,2118,NSW
3rd November 2021 6:06pm
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Jadelink says...
In most places I would suspect burn over fungus. Especially out in the open like that. I've had young ones burn like that, you can either get them a shadier spot, put up some shade cloth, or make a solution out of something like unscented talcum powder and spray/paint them with it.

If it's burn, it stays black, but I've had trees recover from some fairly nasty burn when I got them shade and water.
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Jadelink
NORTHCOTE,3070,VIC
2nd December 2021 5:26pm
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