This is my fourth shot at jackfruit. I bought a really sweet, creamy jackfruit from the local Asian market and planted the seeds. They are just starting to sprout, and I am trying to nip a problem in the bud before it happens AGAIN.
Every time I try to grow jackfruit (always from seed from store-bought fruit), they do great for a while, then when they are about 2 ft tall they start looking deficient in something (looks like potassium or magnesium?), drop all their leaves and die.
I am just stumped. I have zone 10 and zone 12 greenhouses. I use a good quality, fast-draining potting mix, feed regularly but not heavily, and I can give them any size pot they want, up to about 30 gallons. I don't know why they aren't happy! I have a lot of other tropicals (cacao, all sorts of annonas and guavas) that I have had no problem with, but I really struggle with jackfruit (and mango and lychee).
I read something in a post a few years ago about pruning the taproot. Thoughts on that?
Any advice on amount of water/nutrients/light for young jackfruit?
Thanks!
Carolyn