Photo by Melody

PlantFiles: Goat's Horns, Bishop's Hat, Bishop's Cap
Astrophytum capricorne

Family: Cactaceae (kak-TAY-see-ee) (Info)
Genus: Astrophytum (ass-troh-FY-tum) (Info)
Species: capricorne (kap-ree-KOR-nee) (Info)

Synonym:Astrophytum capricorne var. capricorne
Synonym:Echinocactus capricornis

One member has or wants this plant for trade.

Cactus and Succulents

6-12 in. (15-30 cm)
12-18 in. (30-45 cm)
18-24 in. (45-60 cm)

9-12 in. (22-30 cm)
12-15 in. (30-38 cm)

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
Light Shade

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

Bloom Color:
Gold (Yellow-Orange)

Bloom Time:
Mid Summer

Unknown - Tell us

Other details:
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater

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:

Propagation Methods:
From seed; sow indoors before last frost
From seed; direct sow after last frost
By grafting

Seed Collecting:
Allow unblemished fruit to ripen; clean and dry seeds
Properly cleaned, seed can be successfully stored

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to view:

By apachetrail
Thumbnail #1 of Astrophytum capricorne by apachetrail

By palmbob
Thumbnail #2 of Astrophytum capricorne by palmbob

By bhaenraets
Thumbnail #3 of Astrophytum capricorne by bhaenraets

By cactus_lover
Thumbnail #4 of Astrophytum capricorne by cactus_lover

By Xenomorf
Thumbnail #5 of Astrophytum capricorne by Xenomorf

By Xenomorf
Thumbnail #6 of Astrophytum capricorne by Xenomorf

By Xenomorf
Thumbnail #7 of Astrophytum capricorne by Xenomorf

There are a total of 13 photos.
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1 positive
1 neutral
No negatives

Gardeners' Notes:

Neutral cactus_lover On Nov 5, 2005, cactus_lover from FSD
Pakistan (Zone 10b) wrote:

Varies in the amount of flock on the surface and in the number and length of the twisted brown spines.

Positive palmbob On Mar 3, 2004, palmbob from Acton, CA (Zone 8b) wrote:

This is the 'hairy' one of the bunch (Astrophytums) and probably the least ornamental. I have had this one outdoors for 6-7 years (zone 9b in Thousand Oaks, California) and tolerates mild frost without a problem as do all the other common species of Astrophytum. Though this one is spiny, its spines are not sharp and feel a bit like cat whiskers- stiff but pliable. As plant ages spines get a bit more intense and messier, but relatively sparse as a small ovoid plant.


This plant has been said to grow in the following regions:

Chandler, Arizona
Phoenix, Arizona
Tucson, Arizona
Thousand Oaks, California

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