About Transition Zone Horticultural Institute Inc
Frances B. McAllister founded the Arboretum at Flagstaff as The Transition Zone Horticultural Institute in 1981.
She found gardening at 7,000 feet to be a challenge. Her experimentation and success in high elevation gardening prompted her to share her gardens and research with the community.
www.thearb.org
info@thearb.org
Transition Zone Horticultural Institute Inc Registered charity number 942788812