The seeds of the cactus are scattered by wind, rain, and birds. One cactus plant may produce a million seeds during its lifetime. But only one or two seeds will live long enough to produce a new cactus plant. If part of a stem is knocked off and sticks in the ground, it can grow new roots and become a new plant. It will then make its own stems and flowers.
Most cactuses grow very slowly.
Cactuses live from 50 to 200 years. Kinds of cactuses. Some of the most common cactuses in Mexico and the Southwestern United States include the organ pipe, old man, cholla, barrel, prickly pear, and saguaro cactuses. The organ pipe cactus has tall stems that grow in groups. They look like a set of organ pipes.