

Not for pictures
This very unusual cactus appears bumpy and lacks spines. It grows multiple heads which can reach from 6-10 feet. The lack of spines has made this plant endangered in nature, as it has no natural defense against desert animals. However, this has made it very popular in collector gardens, which help to preserve the plant.
The USDA Plant Hardiness Zone Map is the standard by which gardeners and growers can determine which plants are most likely to thrive at a location. The map is based on the average annual minimum winter temperature, divided into 10-degree F zones.