Beavertail Prickly Pear (Opuntia basilaris): Desert Jewel with Magenta Blooms

A spring walk through the desert reveals a sudden burst of vivid magenta flowers atop the gray-blue pads of beavertail prickly pear. This medium-sized cactus lacks long spines, making it a favorite for desert landscapes where its neat growth habit and stunning blooms shine.

Botanical Name: Opuntia basilaris
Common Name: Beavertail prickly pear
Origin: Desert regions of Arizona, California, Nevada, southern Utah, and northern Mexico
Hardiness: USDA zone 8 (hardy to 10°F)
Water Needs: Low; extremely drought-tolerant once established
Light Requirements: Full sun
Mature Size: 3 feet tall, 4–5 feet wide

Benefits and Tolerances

Deep watering twice in summer (if no rain) improves growth and flowering. The pads store water, and the plant maintains a compact, tidy form—reaching about 1 foot high and up to 4 feet across—without becoming an overgrown mass.

Distinguishing Traits

The magenta flowers contrast beautifully with the gray-green pads. Pads are roughly 6 inches long and 4 inches wide, shaped like a beaver’s tail. Though lacking long spines, the pads are covered in tiny, irritating glochids (bristles) that embed in skin. Gloves offer little protection; use tongs, newspaper, or carpet remnants when handling. If glochids embed, apply white glue, let dry, and peel off, or use duct tape.

Varieties

Several varieties exist, including Trelease’s beavertail prickly pear (Opuntia basilaris var. treleasei), endemic to the Bakersfield, California area.

Design Uses

Perfect for desert landscapes, its gray-blue pads contrast with darker foliage. Pair with desert marigold, globe mallow, or Gooding’s verbena (Glandularia gooddingii) for a natural spring display. It also fits re-created desert settings alongside triangle-leaf bursage (Ambrosia deltoidea), saguaro cacti (Carnegiea gigantea), and cholla species. Plant in outer areas to avoid accidental contact with glochids.

Planting Notes

Plant in well-drained or rocky soil; avoid heavy clay. Full sun is essential. Water twice monthly during the first summer. Thereafter, monthly watering in spring through fall (if no rain) enhances growth and flowering. Watch for shriveled pads, a sign of drought stress.

More: Guides to growing low-water succulents