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Author Topic: Making my cherimoya flower!  (Read 260 times)

Kona fruit farm

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Making my cherimoya flower!
« on: May 18, 2019, 02:32:26 AM »
I have a nice healthy grafted "selma" cherimoya tree in my yard...  all my atemoyays are flowering like crazy, but not the cherimoya.   Im thinking its probably not cold enough.  I'm in Kona side of the big island of hawaii  at 1700-1800 feet.  it does get a little chilly here.. but maybe not enough..

Is there a specific fertilizer or chemical treatment i can do that will induce flowering?  or hurting the tree?   Help! i want fruit!
With 3 acres of prime real estate for growing tropicals... why not create my own garden of eden?? Work in progress

Vernmented

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Re: Making my cherimoya flower!
« Reply #1 on: May 18, 2019, 10:45:47 AM »
Hi Jeff,
I hope you are doing good my friend. I would try pruning it back. Tip the ends and strip the leaves off. You don't have to do the entire tree. The usually induces flowering and you can control and spread out your crop by using hand pollination. If the leaves are really stuck on a you are doing damage to the tree you can just cut at the petioles and they will fall off shortly.

BTW, I have my first fruit set on my Rollinia tree that came from your seed of that 7.5 lb monster a while back.
-Josh

spaugh

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Re: Making my cherimoya flower!
« Reply #2 on: May 18, 2019, 12:37:36 PM »
Do you get any chill hours?  I think cherimoyas need some minor chill time maybe 100+ hrs
Brad Spaugh

simon_grow

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Re: Making my cherimoya flower!
« Reply #3 on: May 18, 2019, 01:53:23 PM »
I have a nice healthy grafted "selma" cherimoya tree in my yard...  all my atemoyays are flowering like crazy, but not the cherimoya.   Im thinking its probably not cold enough.  I'm in Kona side of the big island of hawaii  at 1700-1800 feet.  it does get a little chilly here.. but maybe not enough..

Is there a specific fertilizer or chemical treatment i can do that will induce flowering?  or hurting the tree?   Help! i want fruit!

Is your Selma established for about 1-2 years? How thick are the branches? Iíve observed that thinner diameter wood from recently grafted trees or you g trees can sometimes take a breather before they flower. Also, Iíve noticed that some varieties consistently flower whereas other varieties only flower and set fruit on more mature wood like Dr White does in my yard.

Try giving your plant a minor package with Zinc, Iron, Manganese and Copper.

I believe Har mentioned in another thread that Zinc was very important but the other minors/trace are important as well.

Simon

skhan

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Re: Making my cherimoya flower!
« Reply #4 on: May 18, 2019, 04:33:16 PM »
There's an Indian research paper on sugar apples and flowering.
The conclusion was zinc, iron and boron in foliar application was best for flowering.
If I find the link I'll post it again.
But it's somewhere on the forum too
Khan's Edible Oasis
Yard as of Jan 2019

Kona fruit farm

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Re: Making my cherimoya flower!
« Reply #5 on: May 18, 2019, 09:23:18 PM »
thanks guys.. its definitely a nice healthy mature tree... with branches plenty thick to support fruit..  probably a 5 year old tree.   i'll try the zinc and other stuff see if it works..   

i'll post a picture of the tree
With 3 acres of prime real estate for growing tropicals... why not create my own garden of eden?? Work in progress

SeaWalnut

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Re: Making my cherimoya flower!
« Reply #6 on: May 18, 2019, 10:49:42 PM »
Id consider gibberellic acid for fruit set.http://krishikosh.egranth.ac.in/handle/1/5810018430
Hrre they say that 1000 ppm gibberellic acid its better than hand polination and the fruits resulted are seedless but smaller and less tastyer than the fruits with seeds.1000 ppm  its a big concentration thogh ,in the first link they used 25-50 ppm but for sugar apples not cherimola.https://books.google.ro/books?id=BYi_AOteP6wC&pg=PA132&lpg=PA132&dq=gibberellic+acid+cherimoya&source=bl&ots=AO-7NmPggT&sig=ACfU3U3TOKk73RiIWtCPo6QqhXa_Xb_xAA&hl=ro&sa=X&ved=2ahUKEwj-t_CCy6biAhUow8QBHfW3BAE4ChDoATADegQIBBAB#v=onepage&q=gibberellic%20acid%20cherimoya&f=false
« Last Edit: May 18, 2019, 10:57:57 PM by SeaWalnut »

joehewitt

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Re: Making my cherimoya flower!
« Reply #7 on: Today at 04:08:27 AM »
I had a friend in California with many fruiting cherimoyas but she struggled to get Selma to produce. Perhaps this variety is just shy relative to others. Jeff, do you have any other Cherimoyas growing to compare?

Jack, Nipomo

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Re: Making my cherimoya flower!
« Reply #8 on: Today at 08:34:57 AM »
I have about 15 cherimoya varieties, most over 10 years old.  All produce.  None have started flowering yet.  We get good chill hours (plums/apricots do well).  This year has had strange weather and "normal" isn't.  Awaiting the blooming to begin hand pollination.  Cherimoyas have been ripening just in the past two weeks. Some avocados just started flowering, none are ripening yet.

Samu

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Re: Making my cherimoya flower!
« Reply #9 on: Today at 03:07:10 PM »
Do you get any chill hours?  I think cherimoyas need some minor chill time maybe 100+ hrs

Jeff,
According to California Rare Fruit Grower's website, cherimoya requires about 50-100 hours of chilling hours; then I looked up your average yearly temp. for Kona, it shows a pretty much steady high 60F's to low 70F's for your night time lows... So, even at 1800ft  elevation I don't think you could get to low 45F to reach the chill zone.

So, as yourself and Brad suspected, this could possibly be the reason of you having difficulty flowering cherimoya at your location. Good to know your atemoyas are doing well there, though... :)
Sam

 

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