General Plant Information (Edit)
Plant Habit: Cactus/Succulent
Life cycle: Perennial
Sun Requirements: Full Sun to Partial Shade
Water Preferences: Dry Mesic
Minimum cold hardiness: Zone 9a -6.7 °C (20 °F) to -3.9 °C (25 °F)
Plant Height: 0.8 to 2 inches
Plant Spread: 2.4 to 4 inches
Fruit: Dehiscent
Flowers: Showy
Flower Color: Yellow
Bloom Size: 1"-2"
Flower Time: Summer
Suitable Locations: Xeriscapic
Uses: Will Naturalize
Resistances: Drought tolerant
Containers: Needs excellent drainage in pots
Conservation status: Vulnerable (VU)

Conservation status:
Conservation status: Vulnerable
Image
Common names
  • Texas Star Cactus
  • Sand Dollar Cactus
  • Sea Urchin Cactus
  • Silver Dollar Cactus
Botanical names
  • Accepted: Astrophytum asterias
  • Synonym: Astrophytum asterias var. multipunctatum
  • Synonym: Astrophytum asterias var. nudicarpa
  • Synonym: Astrophytum asterias var. nudum
  • Synonym: Astrophytum asterias var. pubescente
  • Synonym: Astrophytum asterias var. roseiflorum

Photo Gallery
Location: The Prickly Pear, Sacramento CA.
Date: 2022-06-05
Location: Jakarta
Date: 2023-09-05

Date: 2017-03-03
Location: Baja California
Date: 2020-12-30
Location: Jakarta
Date: 2023-09-05
Location: Jakarta
Date: 2023-05-05
Location: Jakarta
Date: 2023-05-05

Date: 2016-12-08
Location: Columbus, Ohio USA, Zone 6b
Date: 2022-08-10
Location: San Diego, CA
Date: 2019-06-29
odd crested-like flower on potted specimen, taken at 2019 CSSA sh
Location: Baja California
Date: 2010-05-21
Uploaded by Jai_Ganesha
Location: Baja California
Date: 2020-04-13
Location: Bay Area California
Date: December 2021
Location: Botanischer Garten München-Nymphenburg
Date: 2018-03-11
Uploaded by ljones26

Date: 2014-05-04

Date: 2016-12-18
Location: Baja California
Date: 2020-06-23
Location: Botanical Garden of München Nymphenburg
Date: 2018-03-11
Location: Baja California
Date: 2020-09-02
Uploaded by ljones26

Date: 2017-03-03
Location: Botanical Garden of Latvia
Date: 2018-09-11
Location: Botanical Garden of Latvia
Date: 2018-09-11

Date: 2017-03-03
Location: Botanischer Garten Berlin
Date: 2023-05-11
Location: Tatton Park Flower Show 2009
Photograph by Mike Peel
Uploaded by SongofJoy
Location: San Antonio, TX
Date: Feb 2005
Comments:
  • Posted by Baja_Costero (Baja California - Zone 11b) on Aug 19, 2019 7:55 PM concerning plant:
    Small, flattened globose, spineless cactus from south Texas, Nuevo León, and Tamaulipas. Looks a little like a sea urchin shell, thus the common name. Solitary, up to about 4 inches wide. Large yellow or yellowish white flowers; globose, scaly, hairy fruit. Ribs are low and separated by sharp furrows. Areoles are marked by low tufts of hair. Endangered in the US, vulnerable in Mexico.

    A great variety of cultivars with unusual markings have been selected in cultivation, most with Japanese names. Among the most striking of these is Silver Dollar Cactus (Astrophytum asterias 'Super Kabuto') .
Plant Events from our members
MotherMycelium On April 25, 2021 Obtained plant
From Teedeecacti on Etsy as a replacement for a previous one that was sent to me with a fungal infection, a gift from my partner.
ShawnSteve On July 21, 2022 Miscellaneous Event
Had ordered some from auction website. Not sure when delivery will be, exactly.
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