The idiomatic expression "a field of flowers" is a metaphorical term that refers to an abundance or profusion of something, often used in a positive context. Full definition
Regardless of the season, you can drive out to hill country and see fields of flowers. (classicgaragedfw.com)
I wish there were fields of flowers near where I am! (jessicaluxe.com)
Goodbread and Turner are both part of a growing number of photographers across the country offering artistic nursing portraits — photographing moms breast - feeding outside in fields of flowers or at home in their nursery. (today.com)