Funny note...took my kids to their grandparents last week and their house sits on a hillside...Rowland Heights, CA to be precise...so those of you from the area know what I mean. Anyway, my mother-in-law told me I could take some aloe vera from the bottom of the hill. I've never been down the hill...so I didn't know what to expect! I found the aloe all right...over 500 square feet of continuous vine growing off the side of the hill. What I saw about 50 feet down really blew me away. At least 6 giant opuntia trees...well over 8 feet tall...and some of the pads over 24 inches long and 12 inches wide...EUREKA! I chopped a few to plant at home...and feed the menagerie...the one in the picture with Aladar was one of the small ones. I'll photo the big ones once I plant them...just waiting for them to callous! I'm pretty sure it's Opunitia robusta monstrosa...the same ssp Tyler sells!