I have a grafted Jack I purchased from Lara Farms Nursery. Julian Lara called it a Lara Farms Jackfruit. I have not tried it, but he had some really nice things to say about it. It is a Gold Nugget seedling ...
So far, it has a very slow and compact growth habit compared to my other Jack trees. The leaves are also smaller, roundish, and very deep green.
I planted it about 1 year ago as a 1 gallon, and it is still pretty small ..