bed of colorful prairie flowers in an urban environment attractive to insects and butterflies, mulched by gravel. on the corners o

achillea allium asphalt attractive bed bloom blossom blue butterflies calamagrostis cement cobblestone colorful concrete coreopsis corners coronaria curb environment flowerbed flowers geranium grand granite gravel gray green insects lychnis millefolium morning mulch mulched mulching park pink post prairie purple red sage sanguineum sedum sidewalk sphaerocephalon sphere square street summer sun sunny telephium terrace town urban verticillata village water wooden yellow