We have about 10 or so different varieties like Gigantea, Haysa, etc.. Our problem with sapodillas is over production, which really is not a problem unless your loooking for a fast growing tree. I apply very small inputs of compost, anything carbon, raw manure at least every 3 mos... This is probably one of the easiest to grow and easily fruiting trees we grow. We have recently installed after 3 years an Artesian drip system with a calcium carbonate infused water.
N.P.K.
Gigantea planted as 3 gal. Last year first fruiting.
Haysa, 2nd crop 3 years in ground planted as 3 gal.
Ice Cream Bananas 12 fruitings from one 3 gal. Initial planting in less than two years.
Sylas Wood first year in ground from 3 gal. First fruiting
Nem nun sun from Excalibur. Not sure what this is. I bought as 3 gal. 3 years ago but transplanted here from my beach house last year has about 6 fruit
Another transplant from my beach house last year 2nd fruiting has about 12 fruit. Not sure what variety is good but has excellent flavor some grit.