Plate No. 25

Beavertail

Opuntia basilaris

"Purple-tinged pads with magenta blooms"

Native to

Mojave and Colorado deserts of the American Southwest

Botanical illustration of Beavertail
Opuntia basilaris — drawn from life
History

A brief account

A low-growing prickly pear with flat, spineless-looking pads that flush purple in cold weather. In spring the pads erupt in vivid magenta flowers. The Cahuilla and other desert peoples gathered its ripe fruit for centuries.

How to care for

Beavertail (Opuntia basilaris) grows best when its natural cycle of strong light, freely draining soil and measured watering is respected. Give it full sun. Water it according to its seasonal needs: almost none — natural rainfall is enough outdoors. Plant it in sharp gravel and sand. A container with an unobstructed drainage hole is essential, because moisture lingering around cactus roots can quickly lead to rot. Keep its temperature needs in mind: -10 to 40°c. extremely cold-hardy when dry. During active growth, check the compost before watering rather than following a rigid calendar, since heat, light and pot size all change how quickly it dries. Reduce watering during cool or dormant periods, keep the plant well ventilated, and wait until the growing medium is dry before watering again.

How to propagate

A dropped pad roots wherever it falls. Take material from healthy growth with a clean blade or tongs, then leave the cut surface in a dry, shaded place until it forms a firm callus. Set it into a dry, gritty medium and introduce water sparingly only after roots begin to develop. Young cacti are especially vulnerable to excess moisture. Use a small pot with excellent drainage, provide bright filtered light while roots establish, and move the new plant gradually into the light, temperature and watering conditions preferred by a mature Beavertail.
Cultivation

Quick tips for care & planting

Light
Full sun.
Water
Almost none — natural rainfall is enough outdoors.
Soil
Sharp gravel and sand.
Temperature
-10 to 40°C. Extremely cold-hardy when dry.
Propagation
A dropped pad roots wherever it falls.