Cactus wall

I think I'm going to make this week my week of cactus photos. The neighborhood where I got this has lots of them, but if I don't want to go there, I can just go anywhere else in this city.

Side note: When I took this picture, a woman came out of the house and asked what I was doing. I was prepared for a confrontation and explanation of rights, but I simply told her I liked her cactus and wanted a photo. I was friendly, and she didn't mind. Phew.