Beavertail prickly pear

Opuntia basilaris

Family:: Cactaceae
Elevation:: 300 ft – 6,000 ft
Bloom:: Mar – Jun
Region:: Southwest

A low, clumping prickly pear with flat, spoon-shaped blue-gray to purple-tinged pads that look deceptively spineless but bristle with tufts of tiny barbed glochids. In spring it erupts in brilliant magenta to rose flowers, making it one of the showiest low-desert cacti.

Care · tuned to the Southwest

Water

Highly drought tolerant; water sparingly and let soil dry fully between soakings. Excess water, especially in winter, rots the pads at the base.

Sun & exposure

Full sun and reflected heat; too much shade produces weak, floppy pads.

Soil

Needs very sharp drainage — sandy, gravelly, or rocky mineral soil; avoid rich, moisture-retentive mixes.

In the Southwest

A warm low-desert species, less cold-hardy than plains prickly pear (roughly to 10–15°F). No long spines but abundant hair-like glochids that detach at a touch — handle only with tongs. Propagate by letting a detached pad callus, then setting it in dry gritty soil.

Common problems & fixes

Basal rot — pads yellowing and softening at the base
Fix — Stop watering, improve drainage, and remove rotted pads back to firm green tissue with a clean blade.
Glochid injury during handling
Fix — Always use folded newspaper or tongs; lift embedded glochids with tape or white glue and gauze.

Pets & toxicity

Not chemically toxic, but the fine barbed glochids are the real hazard — they lodge in mouths, paws, and skin, causing intense irritation.

Easy to confuse with

Santa-Rita prickly pear (Opuntia santa-rita) — larger, upright purple pads with a few spines at the top
Plains prickly pear (Opuntia polyacantha) — densely long-spined, not just glochids

Sources

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