Tucked into a corner of The Farm at South Mountain sits the culmination of 37 years' worth of desert plant passion. Steve Martinez opened Succulentia on December 1, 2010. The greenhouse is stuffed with rare and hard-to-find cacti and succulents from Tucson, California, and Texas. Waxy leaf clusters, bonsai-esque plants, and spindly, spiny trees (ranging from $8 to over $1,000) line the tables in no particular order. Also on display is his own personal collection of award-winning plants. "You won't find these at Home Depot," says Martinez. Indeed.