khourshed, the more usual symptom is a pale leaf blade with green leaf veins. With a bit of imagination you can discern a green 'triangle' (outlined by the yellowing edge) on the older leaves. You have probably seen the same symptom on older palm fronds - especially Phoenix canariensis, the Canary Island date palm. The symptom is related to magnesium deficiency, I think that you have over applied iron and this may have depressed magnesium uptake (if I remember correctly). Hence the browning along the edge (iron toxicity) and the green triangle (magnesium deficiency). The brown sections should be crisp to the touch. If not, you might have something else. Another pleasant fruit is the soursop, Annona muricata. It flavors ice cream exquisitely.

If you are talking about Annona squamosa you might want to try Trade Winds Fruit. Karyn Here is a link that might be useful: Trade Winds

I have American persimmon seeds, Diospyros virginiana if you are interested in a trade. Please let me know here.. My e-mail address has changed and I can't seem to figure out how to change it.

I haven't grown sugar apple seeds, but pawpaw (Asimina triloba) is in the same family, and I have started lots of those. Pawpaw seeds can take quite awhile to get started. They first send out a root, and several weeks later the shoot emerges. Are you looking at the seeds, or just looking for shoots above the soil? Alex