A small, little-known cactus found in Organ Pipe National Monument west of Tucson faces a "high and immediate" threat of extinction, says the U.S. Fish and Wildlife Service in proposing to protect it ...

Walnut Creek’s Ruth Bancroft is a national authority on drought-resistant gardening. Twice a month she and her staff share their knowledge with readers. Astrophytum is a small genus in the Cactus ...

The largest genus in the cactus family (Cactaceae) is Mammillaria, and a very recognizable member is the twin spined cactus (Mammillaria geminispina). This small cactus has tiny tubercles (rounded ...

Which is correct: cactus, cacti, cactuses? Don Watkins doesn't know and he doesn't really care. Nor does he spend time learning the botanical names of the hundreds of cactus he nurtures at his ...