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These plants begin life growing upright and columnar. But soon they become heavy, fall over and root in. They continue to grow from the tip, creeping across the desert ground as the original plant base slowly dies. The spines on this plant are 1-2 inches long and barbed making it the creeping devil.
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.