I caught California in a huge flower bloom. My cousins were so kind to take me to the Antelope Valley Poppy Field that has now gone past its bloom. Be warned that the area is super windy so have a windbreaker with a hood. The poppy fields go on forever so you can get a nice hike in but my cousins were turned off by the wind so we only got a few good photos.
The main area you have to pay like $5 per car but there are patches where you can stop and take photos for free. Next April check it out if you have chance.