Where to photograph in California – Yahoo Groups (Calphoto) has a report for the Yosemite area
We just spent 5 days in the Yosemite area at the north and south ends, did not go in to the valley due to all the people. Lower elevations did not have many flowers, that we saw. Hite Cove was good with a nice variety of plants. Wawona area saw a few trillium. Hetch Hetchy hiked about 2 miles to the first waterfall and saw a limited diversity of plants. Drove 49 from Mariposa to Sonora seeing very few flowers except for the Serpentine area in Bagby. Be aware of road closures and detours in Yosemite.