close up of rose clover (trifolium hirtum) wildflowers blooming on a field, san francisco bay area, california

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