Ilama
The tropical lowland cousin of the cherimoya. Rare here, beautiful fruit, and a conversation piece in any collection.
Annona diversifolia / Annona macroprophyllata
A rare Central American annona with rich pink or white flesh, and a real challenge to fruit here.
Why it works here
I will be straight with you. Ilama is a collector's tree that does not really want our climate. It is the tenderest annona for cold, taking damage right around 30 to 32 degrees, and it fruits best after a hot dry summer followed by late-summer rains, a pattern South Florida rarely gives it. It does prefer deep sand over limestone, which we can offer, but the seasonal rainfall it wants we cannot. Plant it only if you are the kind of grower who enjoys coaxing a difficult tree, and give it your warmest, best-drained spot.
Care
Start young trees in partial shade and move them into full sun as they mature. Water thoughtfully, leaning drier in winter to mimic the rest period it wants, and heavier in the warm growing season. Feed with compost and balanced organic fertilizer and mulch off the trunk. Because our humid summers work against natural set, hand pollination is worth trying. Protect it from cold every winter while it is young.
Common problems
On the plus side, ilama is more resistant to the seed borer and chalcid fly than its cousins, so the fruit is less likely to be wormy. The real problems here are climate driven: cold damage in winter and poor fruit set in our humid, evenly wet summers. There is not much you can spray or feed your way out of that. It is a siting and patience issue more than a pest issue. Honest caveat: many Treasure Coast growers never get a good crop from it.
Common questions
Why is my ilama not fruiting?
Most likely our climate. It wants a hot dry stretch then rain, which we do not naturally provide, and our humidity hurts pollination. Hand pollination and careful siting help, but it stays a challenge.
Is it hardy enough for the Treasure Coast?
Barely. It is the most cold-sensitive annona here, taking damage near freezing, so it needs your warmest microclimate and winter protection when young.
Is it worth planting?
Only if you enjoy the challenge and the rarity. If you want reliable annona fruit, sugar apple or soursop will treat you much better.
Interested in a ilama in your landscape?
We plan, install, and care for it. Start with a paid consultation.