The Two-tailed Tiger ones have mostly been on black cherry trees and some on Arizona Ash in the last few years, also a few on Hop Trees. That's changed...in the past, they were mostly using Hop Tree, with a few on black cherry tree. Not sure why the change. Only had one Eastern Tiger this year...I think it was on Arizona Ash. I've released two more of the Two-tailed Tigers. Normally I'd be seeing some of those that I didn't raise, but I think it's only the ones I raised so far.