Brittle Prickly Pear (Opuntia fragilis): The Most Cold-Hardy Prickly Pear, Fragmenting Easily

Brittle Prickly Pear, also called Fragile Prickly Pear, is a low, mat-forming cactus with small, easily detached pads that root readily to form new colonies—hence "fragilis." The pads are gray-green with few spines but abundant glochids. Yellow flowers appear in early summer. Its range extends far north into Canada, making it the most cold-hardy opuntia, surviving -40°F (-40°C). Native to western North America, it’s a tough survivor for harsh climates.

Taxonomic Profile

Cultivation

Full sun. Sharp drainage. Extremely drought and cold tolerant. The pads detach at the slightest touch—handle minimally. Ideal for rock gardens, green roofs, and cold-climate collections. Propagate by simply laying pads on soil.