We made it back to Tucson about three weeks ago. I'm having a little trouble with accurate time keeping so I may be wrong about that. Driving in from the west gave us an opportunity to hike up to an area in Saguaro West National Park where petroglyphs can be seen. It was a really nice hot day in the 80's and a pleasure to find the area very much the same as it was eleven years ago when we left AZ.
In the canyon walls of the area it is possible to find some tough desert ferns. Usually requires some seepage coming out the cracks of the walls.
This ones for you Matt.