I'm a local.
This spring should be nice and green, it's just now starting, early-mid May should be peak for the cooler season grasses, a month later the Cholla Cactus will be in bloom. Would make a nice mountain bike trip or hike, it is about 17 miles roundtrip if you do the entire route.
And please help appreciate our environment, economy and history and work to prevent the Army and U.S. government from taking any more of it away. http://www.pinoncanyon.com/.