Parkinsonia x'Desert Museum'
Spring visitors to southern
Arizona often exclaim over the brilliant yellow flower displays of our
native palo verde trees. Mark Dimmitt, a botanist at the Arizona Sonora
Desert Museum in Tucson, improved upon nature by developing this
thornless hybrid, with larger flowers and a longer bloom period. This
plant is a three way cross between Parkinsonia microphyllum,
Parkinsonia floridum, and Parkinsonia aculeata.
This fast-growing clone has an upright growth habit, quickly
reaching a mature size of 25 feet tall and wide. 'Desert Museum'
has small, bright green, compound leaves and smooth lime green
bark. "Palo Verde" translates to "green
stick" in Spanish, describing the green bark that carries
on photosynthesis when the leaves are shed during cold or
drought. Masses of yellow flowers are produced from March though
May, with sporadic flowering during the summer months.
Hardy to 15° F. USDA