Astrophytum asterias hybrid cristata
 
Insane specimen - we've never seen anything like it.
Scion measures almost 5" wide x 4.5" tall. 
Entire cactus measures 12" tall.  
Roots as shown.
Will be shipped bare root. 
 
LIGHT - Full sun but careful not to burn
 
WATER - Let dry completely between waterings which will be about every 10 days. Don't let sit in water. Water less in winter.
 
SOIL – Well drained soil - best is mixture of clay, loam & sand
 
COLD TOLERANCE – Zones 9a – 11b.
 
DORMANCY - Winter
 
SIZE - Up to 6-12” tall
 
FLOWERS - Sometimes gives yellow flowers up to 3” in diameter in spring followed by fruit
 
PROPAGATION – Cuttings using root compound or grafting
 
TOXICITY - Toxic if ingested by humans or animals.