Jackfruit tree not holding fruits

[leslieman]

Members,

              My Jackfruit tree is not holding fruit, they fall off about three inches long. Tried all kinds of fertilizers and no improvement, please advise

[metalfan]

I have a new tree. How big is yours? When did it start to make fruit? I have not had any blooms yet, so can;t advise you. But am interested

[rprimbs]

Mine keeps dropping fruit too.  It seems that I am only getting 'female' flowers -- and no pollen covered males.  Maybe I will get both when it gets a little older.

[Jerry@TreeZoo]

From what I understand, it blooms only male flowers for the first couple of years.  When the wood gets strong enough to hold fruit it starts blooming both male and female flowers.

[metalfan]

Jerry good to know!

[rprimbs]

16 hours ago, Jerry@TreeZoo said:

From what I understand, it blooms only male flowers for the first couple of years.  When the wood gets strong enough to hold fruit it starts blooming both male and female flowers.

That's what I have heard too, but the flowers I am getting are definitely only female.  I had a friend from Vietnam -- who grew them in Vietnam -- look at them.

[Palmarum]

22 hours ago, leslieman said:

Members ... My Jackfruit tree is not holding fruit, they fall off about three inches long. Tried all kinds of fertilizers and no improvement, please advise

One general rule for many tropical fruit trees, is that you do not apply fertilizer when the tree is holding fruit at any stage; if that was the case.

This includes fertilizing any other tree or plant nearby, especially lawn fertilizer, which is a main culprit to many-of-lost fruit. The fertilizer kicks the tree into leaf production, causing the tree to abort the fruit and switch to producing branches and leaves.

Ryan

[rprimbs]

3 hours ago, Palmarum said:

One general rule for many tropical fruit trees, is that you do not apply fertilizer when the tree is holding fruit at any stage; if that was the case.

This includes fertilizing any other tree or plant nearby, especially lawn fertilizer, which is a main culprit to many-of-lost fruit. The fertilizer kicks the tree into leaf production, causing the tree to abort the fruit and switch to producing branches and leaves.

Ryan

That's interesting.  I believe that.  We have a lychee in a pot that I need to get into the ground.  It was covered with fruit, so I fertilized it and gave it extra water.  It dropped all of the fruit, and put out a thick new flush of new leaves.

[Alan_Tampa]

Those are most likely male flowers.  Are they long and slender?

 

 

[Jerry@TreeZoo]

15 hours ago, Alan_Tampa said:

Those are most likely male flowers.  Are they long and slender?

 

 

And are they attached to small branch-lets, too small to hold the weight of mature fruit?  Female flowers only appear on sturdy branches.

 

We need photos.

[tropicbreeze]

The female flower attaches to the peduncle via a 'cap' or 'collar' which is what helps the fruit stay on the tree despite the size. The male flower attaches direct to the peduncle and falls off when done.

Male flower

Female flowers (male in background).

[greysrigging]

A healthy Jackfruit tree out at a Howard Springs 'Open Garden' show. 

[Jerry@TreeZoo]

On 7/17/2021 at 12:05 AM, tropicbreeze said:

The female flower attaches to the peduncle via a 'cap' or 'collar' which is what helps the fruit stay on the tree despite the size. The male flower attaches direct to the peduncle and falls off when done.

Male flower

Female flowers (male in background).

Zig = EXCELLENT!