From the Desert Sun:
Because of the unusual rain there is a "super bloom". I didn't know they happened at this time of year. We were there in March one year and they had an extraordinary amount of rain. We didn't really have anything to compare it with (this was a Spring Break holiday when we were working) but locals were very excited and were pointing our plants that hadn't bloomed in over 50 years. I found it quite fascinating that seeds could hang around waiting for an unusual amount of rain.
Ah...the natural world.