From googling for cactus at Balboa Park I found mention of Old Man Cactus, C. senilis in a couple of places but I have so much trouble comparing photo's and don't know cactus at all. This is one of the things that came up while googling: http://www.projectnoah.org/spo...
~ I'm an old gal who still loves playing in the dirt!
~ Playing in the dirt is my therapy ... and I'm in therapy a lot!