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Astrophytum Species, Sand Dollar, Sea Urchin Cactus, Silver Dollar Cactus, Texas Star

Astrophytumasterias

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Astrophytum asterias by PotEmUp
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Family
Cactaceae (kak-TAY-see-ee)
Info
Genus
Astrophytum (ass-troh-FY-tum)
Info
Species
asterias (ass-TEER-ee-as)
Info
Synonym
Echinocactus asterias
Astrophytum asterias var. asterias
Sun Exposure
Sun to Partial Shade
Foliage

Unknown - Tell us

Height
6-12 in. (15-30 cm)
Spacing
6-9 in. (15-22 cm)
Hardiness
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

Unknown - Tell us

Bloom Color
Pale Yellow
Bloom Time
Mid Summer
Other Details
Category
Cactus and Succulents
Water Requirements
Drought-tolerant; suitable for xeriscaping
Foliage Color

Unknown - Tell us

Where to Grow
Suitable for growing in containers
Bloom Characteristics

Unknown - Tell us

Bloom Size

Unknown - Tell us

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 seed; sow indoors before last frost
By grafting
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:

Carefree, Arizona

Queen Creek, Arizona

Tucson, Arizona

Reseda, California

Chicago, Illinois

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18 members have or want this plant for trade

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Gardener's Notes:

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3
positives
1
neutral
0
negative
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F
F
frostweed
Josephine, Arlington, TX (Zone 8a) | December 2006 | positive

Silver Dollar Cactus, Texas Star Cactus Astrophytum asterias is Endemic to Texas and is now classified as an Endangered plant.

C
C
cactus_lover
(Zone 10b) | November 2005 | positive

A fair contstant plant in cultivation;noticeable raised ribs usually indicate a hybrid with A.capricorne.

S
S
smiln32
Oklahoma City, OK (Zone 7a) | November 2004 | neutral

It is a low growing plant and is 3-4" in diameter. It does not have spines. The yellow flower is about 2 inches. The larger white tufts...Read More

P
P
PotEmUp
Fremont, CA (Zone 9a) | March 2004 | positive

A cactus without thorns, my kinda cactus. Identified as an endandered species on 10/18/93 with a recovery plan written in August, 2003

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