Chinese Pistache growth rate
I've seen a lot of messages about the growth rates of chinese pistache. When I bought ours several years ago the nursery-gal said to expect 2-4 feet a year and a tree that would be 30-35 feet tall/wide. After about six years, I'm only averaging 1-1.5 feet a year and this is hardly the large shade tree that I was hoping for.
Question - anyone have any experience with these tree in the SF Bay Area (San Jose/Almaden Valley neighborhood)? Any suggestions for increasing the growth rate?