Mojave Mound Cactus, Giant Claret Cup, Salmon-flowered Hedgehog, Spiny Hedgehog

Echinocereuspolyacanthus subsp. acifer

Family
Cactaceae (kak-TAY-see-ee)
Genus
Echinocereus (ek-in-oh-KER-ee-us)
Synonym
Echinopsis valida var. densa
Echinocereus polyacanthus var. densus
Cereus acifer
Echinocereus acifer
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Height
6-12 in. (15-30 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)
USDA Zone 11: above 4.5 °C (40 °F)
Danger
Handling plant may cause skin irritation or allergic reaction
Plant has spines or sharp edges; use extreme caution when handling
Bloom Color
Red
Scarlet (dark red)
Red-Orange
Bloom Time
Late Spring/Early Summer
Other Details
Category
Cactus and Succulents
Water Requirements
Drought-tolerant; suitable for xeriscaping
Foliage Color
Where to Grow
Can be grown as an annual
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 herbaceous stem cuttings
From woody stem cuttings
From seed; direct sow outdoors in fall
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

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Gardener's Notes:

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positive
1
neutral
0
negative
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Phoenix, AZ (Zone 9b) | May 2007 | neutral

This plant (and subspecies) can form clumps with as many as 400 heads
The 'polyacanthus' subspecies has smaller flowers being only...Read More

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