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Cherimoya

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Jason starts with ...
I have had this tree for 7 years now and have had plentiful flowers but no fruit. Can anyone provide diagrams of when and how to gather and pollinate the flowers
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JasonRutkowski1
Winmalee
22nd June 2007 9:58am
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Kath says...
There are some good illustrations on the net of the flowers and descriptions of how to hand pollinate and what you are looking for. Have a look at
http://www.hort.purdue.edu/newcrop/morton/cherimoya.html#Pollination

Pollination
A problem with the cherimoya is inadequate natural pollination because the male and female structures of each flower do not mature simultaneously. Few insects visit the flowers. Therefore, hand-pollination is highly desirable and must be done in a 6- to 8-hour period when the stigmas are white and sticky. It has been found in Chile that in the first flowers to open the pollen grains are loaded with starch, whereas flowers that open later have more abundant pollen, no starch grains, and the pollen germinates readily. Partly-opened flowers are collected in the afternoon and kept in a paper bag overnight. The next morning the shed pollen is put, together with moist paper, in a vial and transferred by brush to the receptive stigmas. Usually only a few of the flowers on a tree are pollinated each time, the operation being repeated every 4 or 5 days in order to extend the season of ripening. The closely related A. senegalensis Pers., if available, is a good source of abundant pollen for pollinating the cherimoya. The pollen of the sugar apple is not satisfactory. Fruits from hand-pollinated flowers will be superior in form and size.

There are some good pictures of the flowers at various stages on this web page
http://www.crfg.org/pubs/ff/cherimoya.html
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Kath
Cawongla
25th June 2007 3:10pm
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