DesertUSA has a map of wildflower bloom and photos at: Anza-Borrego Desert
Anza-Borrego Desert Natural History Association has a wildflower report for Oyster Shell Wash (Fish Creek Mountains).
Along the Split Mountain Road you see a lot of desert sand verbena and desert dandelions. In the Fish Creek Wash we saw some desert sunflowers, asters, milk vetch and ground cherry.In the Oyster Shell Wash and side washes we saw a reasonable amount of wildflowers and many of them are not yet blooming. Browneyed evening primrose, notch leaved phacelia, bishop’s lotus, desert tobacco, desert hibiscus, fagonia, parish’s gold poppy, lupine, false mustard, ghost flowers, desert chicory, trailing windmills, popcorn flower, heart leaved evening primrose, rock daisy, wishbone bush, desert lantern.
Ella Wash some side washes. “Beautiful, easy to hike washes, but almost no wildflowers
Read all their reports at: Anza-Borrego Wildflowers Spring – Fall 2013
Natural History Wanderings 
[…] Another Anza- Borrego Wildflower Update for 3/12/13 (naturalhistorywanderings.com) […]
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By: Ghost Mountain | Source Reflections on March 17, 2013
at 10:10 AM