Hywel's Garden
Cacti - Astrophytum coahuilense
Native to Coahuila and Durante, in Mexico ... where they grow amongst other vegetationon, on south and east facing limestone slopes.
Origin: South-western Coahuila and Durante (Ciudad Lerdo, Sierra Baicuco, western Sierra Parras and southern of this line up to the Sierra of El Numero)
Habitat: They inhabit preferentially sunny south and east slopes on lime formations, rarely grow in north or west position between white grey rock in a loose to thick vegetation, which mainly consists of a dry bush community. The soil, consist mainly of lime gravel and sand with isolated humus feedthroughs.