Botanical Desert Of The Southwest

April 7, 2026

Having recently been to places that are not in the North Texas Hardiness Growing zone (8a/ 8b), I’ve come to appreciate plants that are not usually grown here.  The region of Phoenix (9a), located in the Sonoran desert, provided an opportunity to experience a very different variety of plants and trees.  

During late March the streets were lined with yellow blooms on medium sized trees.  These are known as Yellow Palo Verde Trees.  A blue variety also exists, but yellow ones were most common. These trees are located in The Sonoran desert,  Southwestern US and in Northwest Mexico.

 Yellow Palo Verde tree at entrance of Desert Botanical Garden along with Yuccas, Cacti  and even some Chihuly glass sculptures. 

The Desert Botanical Garden was in bloom around every corner.  Here are a few of the blooms and interesting specimens.  The red rosettes of baja fairy duster, Calliandra Californica, were beautiful against the feathery fernlike leaves which close at night. 

 Several varieties of the hedgehog cactus sported different color blooms.  This one caught my eye and is suited to zones 5-9 in North and Central America.

However, there are some plants that we have adapted to our landscape due to their drought tolerant nature.  The yucca being one.  The Scientific and common name is the same. With over 50 species, The range of  the Yuccas extend from Southern Canada through North America and down to Panama. 

These pictures were all taken at the Botanical Desert of the Southwest in Phoenix.  https://dbg.org

Starla Willis. Dallas County Master Gardener Class of 2011

A few more prickly facts about Texas cacti here.