“What’s a Nurse Tree?” you ask.

Photo of Colorful AZ Fishhook Cactus

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 […]