Saifu,
What is this "cerrado curse" you speak of?
Decline in the fall, death by spring type of thing?
I believe the "Cerrado curse" was coined by Luc.
For me, it is generic term for saying that most Cerrado plants seem doomed to die sooner or later when grown outside their range.
Rather than dying from cold, they have a very narrow tolerance for soil and water parameters outside their confort zone.
My rarefruit fever as abated over the years, and I'm not trying every species as fervently as I used to, but my experiments
with Annona crassifolia and Duguetia lanceolata have improved with each try.
Overall, the challenge seems to keep them dry in the winter. Provide quite acidic soil that is very fast draining. And use pure rain water.
The first precludes me from growing them outside in my zone, because winter is our rainy season. Most years, rain is scarse and concentrated on just
a few episodes, so it is difficult to store. And I cannot quite find how to recreate soil that is acidic and fast draining. Sand alone does not seem to cut it.
It would have to be some sort of the red laterite soil, which is common in tropical regions.
I seem to recall reading that Cerrado soils is so acidic that it it very rich in aluminium, to the point that it is poisonous to non native plants.
I have wondered if they might need the aluminium, besides the low pH. But it has been a while since I have researched the subject, so take that
with a grain of salt...