Columbia Prickly Pear

Opuntia columbiana

Poaceae

• Eastern Washington Native
• Full sun
• ~12 in tall × spreading (low, mat-forming clumps)
• Drought Tolerant: Very high
• Flower Color:  Showy yellow (sometimes peach/orange/red-tinged) flowers (May–July)
• Wildlife Benefits: Native bee pollination; fruit feeds birds & wildlife

Columbia prickly pear is a cold-hardy, mat-forming cactus and one of the very few cacti native to eastern Washington. The Burke Herbarium recognizes it as a native species, Opuntia columbiana, occurring east of the Cascade crest from south-central British Columbia through eastern Washington to eastern Oregon and into western and southern Idaho, on sagebrush plains, foothills, rocky outcrops, and dry basalt slopes. The name is sometimes written Opuntia x columbiana because several authors regard it as of hybrid origin between brittle prickly pear (O. fragilis) and plains prickly pear (O. polyacantha). It demands full sun and fast-draining, dry soil, and it is exceptionally drought tolerant.

The plant grows low and spreading, generally under about 12 inches tall, forming rounded clumps that can knit into broad mats over time. Its flattened, jointed, blue-green pads are evergreen, holding color and structure year-round, and are armed with stout spines 1 to 5 centimeters long. In late spring to midsummer (May to July), showy, cup-shaped, many-petaled flowers open, most often bright yellow, sometimes flushed with peach, orange, or red and centered with red, followed by fruits. Its sculptural, architectural habit gives a rock or gravel garden a strong, distinctive character in every season.

The large, nectar- and pollen-rich flowers are pollinated by native bees, and the fruits provide food for birds and other wildlife. As a genuinely local native adapted to the shrub-steppe, it supports the regional pollinator community and adds authentic habitat value to a water-wise landscape.

Columbia prickly pear is a standout for rock gardens, gravel gardens, hell strips, and sunny, sharply drained slopes where little else will thrive, and it makes a compelling, low-water focal point or living accent among stone. Plant it well away from walkways, seating, and areas frequented by pets and children because of its spines. It combines naturally with other lean-soil natives that share its conditions: Munro's globemallow (Sphaeralcea munroana), wormleaf stonecrop (Sedum stenopetalum), bitterroot (Lewisia rediviva), buckwheats, penstemons, Indian ricegrass, and bluebunch wheatgrass. As a hyper-local native cactus, it is a distinctive and rewarding addition to a SpokaneScape collection.

A handling note: beyond the obvious long spines, prickly pears bear tiny, barbed glochids that detach easily and lodge in skin, so gloves and careful placement away from paths and play areas are wise.