Family: Cactaceae (kak-TAY-see-ee) (Info)
Genus: Echinocactus (ek-in-oh-KAK-tus) (Info)
Species: polycephalus (pol-ee-SEF-a-lus) (Info)
Synonym:Emorycactus polycephalus
Synonym:Echinocactus polycephalus subsp. polycephalus
 One member has or wants this plant for trade.
Category:
Cactus and Succulents
Height:
12-18 in. (30-45 cm)
18-24 in. (45-60 cm)
Spacing:
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)
36-48 in. (90-120 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)
Sun Exposure:
Full Sun
Sun to Partial Shade
Light Shade
Danger:
All parts of plant are poisonous if ingested
Bloom Color:
Pink
Pale Yellow
Bright Yellow
Bloom Time:
Mid Spring
Late Spring/Early Summer
Foliage:
Succulent
Other details:
Drought-tolerant; suitable for xeriscaping
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:
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From woody stem cuttings
From softwood 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
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