Good luck Nate-
Mine are small ones but I have heard they can grow to 8' even from 4" starters in the first year,this warm spring is certainly helping there!
All my bananas are growing,pretty much unheard of at this time of year.
Once they get going even if it does cool off in late April/early May they should keep going.
Post some pics of your Thai blacks,etc during the summer-
I will do the same.
Can't wait to see them take on their blackish tint,I am guessing by July
