Hello My Friends
Hi Gypsi, you might give Aspens a try. Some charts say that they will only grow to zone six, some say zone seven. I live in zone 8 at 4500 feet. The first few years they didn't do to well. Then I was reading a US forest service website and they said that aspens like cool moist soil. So I added quite a bit of mulch and run a sprinkler once a week or so during the hottest part of the summer in addition to deep watering every couple weeks. I never water a tree less that five or six hours. Also a couple weak doses of organic liquid fertilizer during the summer. After doing this they really took off. I have found that Gurneys has by far the best bare root stock, and their prices are good.
Happy Gardening
Jack