by Sheila Murray | May 5, 2026 | Education
Above: The Western Blue Flag (Iris missouriensis) The Arboretum began in 1981 with articles of incorporation as a research garden named the Transition Zone Horticultural Institute (the name The Arboretum at Flagstaff was given shortly after we opened to the public)....
by Sheila Murray | Feb 3, 2026 | Education
Goodding’s Onion (Allium gooddingii) is a perennial wild onion with large reddish-purple flowers and a strong onion-fragrance. Goodding’s Onion is known from Arizona and New Mexico, and occurs on multiple National Forests associated with perennial, intermittent...
by Sheila Murray | Nov 11, 2025 | Education
The Kaibab bladderpod (Physaria kingii ssp. kaibabensis) is a small species in the Mustard Family that is endemic to the North Rim area of the Kaibab Plateau. As can be seen in the photo above, sometimes the plants can be less than one centimeter in size! This plant...
by Sheila Murray | Sep 2, 2025 | Education
The Arboretum at Flagstaff is teaming up with the American Public Gardens Association, the US Forest Service, and our neighbors in the Coconino National Forest to launch a citizen science and volunteer forest health monitoring effort. And we want you on our team! Join...
by Sheila Murray | Aug 6, 2025 | Education
Rare plant seeds are….rare Drought can cause many plants to “give it a miss” when it comes to producing seeds. If a plant lacks adequate water resources and is stressed it can affect the quantity and the quality of seed that it can make. This is even more pronounced...
