update of poppies status can be found here http://www.parks.ca.gov/?page_id=627
I was there on 4/21 (yesterday) and it was beautiful!
I was there on Friday April 19th, Blooming for sure! But yes as ^ points out, they don't bloom if it isn't sunny out.
As long as having sunshine 🌞 they are blooming, check out the weather before you go ASAP before end of May.
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