My native soil is a sandy loam with neutral pH. I bought compost from a local company, they make it, not sure what's in it, probably some manure.
The soil is holding water really well, and I check it often, so it's not a dryness issue.
When the tree arrived it looked really beat up, the leaves on it already had lots of black spots and I assumed it was due to their semi-deciduous nature, but maybe it was already stressed?
I have 5 other Jaboticabas planted in the same area and none of them are having issues.