I keep mine moist and semi shaded with well circulated air..rich organic soil but not so much it is soggy

Hello
i assume we're talking about Amherstia nobilis??.SE Asian tree??
Minxie Where did you get yours and how long have you had it??
A lady in Ft.Lauderdale fla.. supposedly had coaxed one into flower but I've been unable to locate the specimen can't seem to find any in the Botanical gardens here,
including Fairchild.
I understand the rarity is due to being difficult to propagate and very cold sensitive as well as several other factors.
I'm redoing my shadehouse and would love to try one there as I can give it a lot more protection and care.
gary

Its rumored that that there is a place in Ft Lauderdale that has a waiting list for the plant but I dont know it to be fact. Mine was brought to me as a gift and im sure it will be a long time until flowers appear..Usually 7-8 years

I have seen one at "Ernesto's Good Earth" nursery in Miami. It was in bloom too. (Drool) Don't know what he has available for sale at this time though.
There is a place in Ft. Lauderdale with a waiting list but I don't know if they will come through with that.

I am trying to find out what is the coolest temperature this can take and is it that difficult to grow in the US as people say.

I have seen a Amherstia this summer grown as an airlayer that had just finished flowering in a 1/2 gallon pot. I would think that seed would take a very long time to flower.

Hi,
I just saw ur Q. I grow Amherstia in the Northern part of West Bengal- 125 KM from Himalay. It's 39C in Summer n drops to 6 or 7C in winter. Though the climate may vary, I want to give u an idea about its cultivation.
No direct sunlight ( except for first few hrs of day ), high humidity ( I increase humidity by sprinkling water etc ), solid but rich soil ( I use Vermi Compost, Neem cake, decomposed Neem leaves and Bone dust to prepare the soil and also for yearly manuring ) and ' Not acid soil ' are its choice. Water just when it needs. It is highly sensitive. And any stimulant- hormone n fast manure, seem fatal to it. Amherstia dies of - sun burn, root hurt, over / low watering and mostly in winter. I make a poly house for each of them in winter. But one of my plants that is a seedling requires little summer or winter care. I have made a good canopy of climbers for summer.
If possible , try to plant any seedling - min 2yr old. It needs 7-8 yrs to bloom but the possibility of survival is maximum. Never collect sapling with pinkish or brownish- immature, new leaves .
Happy gardening!