I have gladly supported 11 of Paul's Kickstarters : )
I live in a shallow valley that is zone 9 with a very hot & dry Mediterranean climate with hot winds from the W & NW.
The usual annual rainfall is 8.5 inches - but we are in a drought well over 15 years. Very hot in the summer and foggy and cold in the winter.
I do have black locust trees on my property - and some of their seeds have sprouted