Hywel's Garden
Cacti - Astrophytum ornatum mirbelii
Native to Hidalgo, Queretaro and Guanajuato in Mexico.
Grows in wild canyons and on limestone cliffs, sometimes on near vertical rock faces .
Origin: Rio Moctezuma valley in the southern Hidalgo and middle Queretaro The river forms the limit of these two states of the Mexican highland
Habitat: Grows like all its relatives on steep limestone slopes of the canyons and shores of the Barrancas.