Opuntia Species, Grizzly Bear Cactus, Hedgehog Prickly Pear, Mohave Prickly Pear, Oldman Cactus

Opuntiaerinacea

Family
Cactaceae (kak-TAY-see-ee)
Genus
Opuntia (op-UN-shee-a)
Species
erinacea (er-in-uh-SEE-uh)
Synonym
Opuntia hystricina
Opuntia ursina
Opuntia erinacea var. erinacea
Opuntia polyacantha var. erinacea
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Deciduous
Height
6-12 in. (15-30 cm)
12-18 in. (30-45 cm)
Spacing
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)
Hardiness
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
Danger
Plant has spines or sharp edges; use extreme caution when handling
Bloom Color
Pink
Bright Yellow
Bloom Time
Mid Spring
Other Details
Category
Perennials
Cactus and Succulents
Water Requirements
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Patent Information
Non-patented
Propagation Methods
From woody stem cuttings
Allow cut surface to callous over before planting
From seed; direct sow after last frost
Seed Collecting
Allow unblemished fruit to ripen; clean and dry seeds
Unblemished fruit must be significantly overripe before harvesting seed; clean and dry seeds
Properly cleaned, seed can be successfully stored
Regional

This plant is said to grow outdoors in the following regions:

Livermore, California

Las Vegas, Nevada

Oklahoma City, Oklahoma

South Jordan, Utah

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Gardener's Notes:

1
positive
0
neutral
0
negative
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Phoenix, AZ (Zone 9b) | July 2004 | positive

Bristly spines, 3 to 5 inches Pink or yellow or red flowers in springtime.
The "nicholii" variety has 5 inch plus long thick hair-spines.

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