Many species are pollinated by bats.
Cactus fruits are berries and are usually edible.
The plants vary from small, round globes to epiphytes, vines, and large treelike forms. Cacti are not restricted to desert regions, however, for in America they range from the tropics into Canada. Most cacti bloom in the spring for a very short period, sometimes for only a few hours. The blossoms are noticeably sensitive to light, and often different species blossom only at specific times of the day. Its fragrant blossoms unfold at a visible rate after sunset and last only a single night.