Photo by Melody

PlantFiles: Echinocereus
Echinocereus adustus

Family: Cactaceae (kak-TAY-see-ee) (Info)
Genus: Echinocereus (ek-in-oh-KER-ee-us) (Info)
Species: adustus

Synonym:Cereus adustus
Synonym:Echinocereus adustus subsp. adustus
Synonym:Echinocereus rufispinus
Synonym:Echinocereus caespitosus var. adustus
Synonym:Echinocereus pectinatus var. rufispinus

Cactus and Succulents

under 6 in. (15 cm)
6-12 in. (15-30 cm)

6-9 in. (15-22 cm)

USDA Zone 8a: to -12.2 C (10 F)
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

Plant has spines or sharp edges; use extreme caution when handling

Bloom Color:
Magenta (Pink-Purple)

Bloom Time:
Unknown - Tell us

Unknown - Tell us

Other details:
Drought-tolerant; suitable for xeriscaping
Suitable for growing in containers

Soil pH requirements:
Unknown - Tell us

Patent Information:
Unknown - Tell us

Propagation Methods:
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


No positives
1 neutral
No negatives

Gardeners' Notes:

Neutral Xenomorf On Apr 27, 2005, Xenomorf from Valley of the Sun, AZ (Zone 9b) wrote:

Other valid synonyms are:
Cereus rufispinus
Cereus adustus var. radians
Note: Cereus pectinatus is Not a synonym of this species. It is the synonym of Echinocereus pectinatus.

All subspecies grow solitary stems.
The 'adustus' subspecies has 0-1 central spines and about 8 radial spines per areole. The flowers are 2 inches across.
The 'bonatzii' subspecies has no central spines and 16-20 radial spines per areole. The flowers are up to 4 inches long.
The 'schwarzii' subspecies has 1-5 central spines and up to 15 radial spines. The flowers are 3 inches across.

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