Western Prickly-pear
Opuntia macrorhiza
Last reviewed: June 2026
Opuntia macrorhiza is a drought-tolerant prickly pear cactus native to the central and southwestern United States. This hardy succulent produces bright yellow flowers from May through July and thrives in full sun with minimal water.
Western Prickly-pear (Opuntia macrorhiza) is not on the ASPCA Animal Poison Control Center toxic plant list for dogs or cats (aspca.org (opens in new tab), last reviewed 2026-05-21). If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
full sun
Water
low
Size
6"–18" H × 12"–36" W
Bloom
May, Jun, Jul
Native to
AR, AZ, CO, IL and 8 more states
Pollinators
bees, beetles
Browse plants for this ecoregion
Western prickly-pear is a low-growing native cactus with flat, paddle-shaped stems and bright yellow flowers in late spring and summer. This drought-tolerant succulent forms compact clumps and requires minimal care once established. The distinctive appearance and colorful blooms make it an interesting accent plant for dry, sunny locations.
Growing Western Prickly-pear
Grow Western Prickly-pear in full sun and low water. Mature plants reach 6 to 18 inches tall and spread 12 to 36 inches wide. Expect low maintenance to keep it looking intentional in a front yard.
In an HOA neighborhood
Western Prickly-pear takes more care to keep looking intentional in a front yard. Maintenance level: low. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Sharp spines create safety concerns
- Spreading habit can look uncontrolled
- Cactus appearance conflicts with traditional landscaping expectations
Wildlife value
The large yellow flowers attract native bees and beetles during the blooming season. The pads and fruits provide food and shelter for various wildlife species.
Common questions
- Where is Opuntia macrorhiza naturally found?
- Western Prickly-pear is native to 12 states across the central and southwestern United States, including Arkansas, Arizona, Colorado, Illinois, Kansas, Missouri, Nebraska, New Mexico, Oklahoma, Texas, Utah, and Wisconsin.
- When does Western Prickly-pear bloom?
- Opuntia macrorhiza typically blooms from May through July, producing yellow flowers that attract various pollinators including bees and beetles.
- What growing conditions does this cactus prefer?
- Western Prickly-pear thrives in full sun and requires very little water once established. It is extremely drought-tolerant and well-adapted to dry, sandy, or rocky soils typical of its native range.
- What pollinators visit Opuntia macrorhiza?
- The flowers of Western Prickly-pear attract various native bees and beetles, which help pollinate the plant while feeding on its nectar and pollen.
- Is Western Prickly-pear toxic to dogs?
- Western Prickly-pear is not on the ASPCA Animal Poison Control Center toxic plant list for dogs (aspca.org).
- Is Western Prickly-pear toxic to cats?
- Western Prickly-pear is not on the ASPCA Animal Poison Control Center toxic plant list for cats (aspca.org).
- Is Western Prickly-pear HOA-friendly?
- Western Prickly-pear takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Ready to grow Western Prickly-pear? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
Not sure where to start? Take the 2-minute yard quiz