invasive rose clover trifolium hirtum wildflowers blooming on a field, san francisco bay area, california

america animal annual area bay bloom blooming bright california clover colorful common crop decorative delicate europe european field fodder forage francisco garden gardening grass grassland green ground hills hirtum introduced invasive landscape magenta meadow native nature non ornamental outdoors park pasture pink rose san scenery spring sunny sunshine trifolium vibrant vivid weed wild wildflowers