Joshua Tree National Park Locate the trailhead. For a morning hike, we went out to see an oasis full of actual desert oasis palm trees. I suppose someone counted them at one point, or at least the ones over a certain size, and found 49 to give the name. We started out maybe a little late, I think it was about 10AM already. It was hot! Hot, I tell you! So hot, the plants aren't green. Some cacti in the sun. I guess these little ones like to have neighbors, or maybe just lots of arms.