“What’s a Nurse Tree?” you ask.
![Photo of Colorful AZ Fishhook Cactus](https://elaineapowers.com/wp-content/uploads/2020/08/AZ-Fishhook-Cactus-1.png)
In the heat of the Sonoran Desert, many cacti use the shade of trees to help them survive. They also help in the cold winters. These are nurse trees. Underneath a mesquite in my yard, I found this thriving Graham’s Nipple or Arizona Fishhook Cactus. The scientific name is Mammillaria grahamii. I wouldn’t have noticed […]