Last year I took my daughter's baptism photos in the poppy field in Alpine, Utah. It is a smaller area but packs a punch! The poppies usually bloom in July and are so pretty!
Because it is a smaller space, a family session probably wouldn't work. But I would recommend a session here for a couple, or family of 3, or singles. There are small paths leading around the area with benches to sit on as well. It is such a pretty little spot.