James H. Schutte
Family
Cactaceae
Botanical Name
Opuntia polyacantha
Plant Common Name
Plains Pricklypear
General Description
Spiny is the best word to describe the look of this low growing pricklypear cactus. It is native to central and western North America from Mexico to British Columbia. Plants from different regions often vary widely in characteristics such as spine length.
This cactus blooms in late spring or early summer with flower color often varying between locations. Generally speaking the blooms are yellow to red with many variations in between. Relatively unattractive brown, dry-fleshed fruits follow. These are savored by birds and rodents, which feed on the seeds. This pricklypear has light green, oval pads, usually heavily set with clusters of large spines. Spines of some forms - most notably variety erincaca - are white and hair-like. Although superficially resembling leaves (and treated as such in the following list of characteristics), the pads are actually modified stem segments.
Full sun and sharply drained soil are needed for good health. Northern selections can be quite hardy, withstanding hard frost and freezes. This cactus spreads to form large patches, rooting as it grows. It is ideal for hot rock gardens and arid natural areas. The coarse texture of the spines contrasts well with other smooth-skinned cacti.
Characteristics
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AHS Heat Zone
10 - 1
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USDA Hardiness Zone
6 - 10
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Plant Type
Cactus or Succulent
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Sun Exposure
Full Sun
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Height
4"-10" / 10.2cm - 25.4cm
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Width
1'-5' / 0.3m - 1.5m (3)
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Bloom Time
Late Spring, Early Summer
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Native To
Central United States, Western United States, Canada, Mexico
Growing Conditions
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Soil pH
Acidic, Neutral, Alkaline
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Soil Drainage
Well Drained
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Soil type
Loam, Sand
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Tolerances
Drought
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Growth Rate
Medium
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Water Requirements
Drought Tolerant
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Habit
Spreading
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Seasonal Interest
Spring, Summer, Fall, Winter
Special Characteristics
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Usage
Alpine, Container, Mixed Border, Rock Garden / Wall, Wildflower
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Sharp or Has Thorns
Yes
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Invasive
No
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Attracts
Birds
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Self-Sowing
No
