AZ Arboretums

Guaiacum coulteri

Desert zinnia

Family: Zygophyllaceae
Origin: Native to Sonora
Light: Full sun to light shade
Little water when established
Temp: Hardy to 25°F (-4°C)
Soil: Needs well drained soil

Semi-evergreen bush or small tree to 12 feet tall (3.6 m). Mature height is 6’ - 25’, m ature width, 6’ - 25’. Growth rate is slow to moderate.

An attractive addition to any landscape when in blooming in Spring to Mid-Summer. Flowers are intense blue.

Native to western Mexico. It will grow to 25 feet high and wide in frost free areas. In colder areas may only get to 6 feet tall and wide.

With dark green leaves attached to interesting crooked twisting branches this is a collectors gem.