beautiful blue flowers of symphytum caucasicum, caucasian comfrey blooming in spring summer park

garden symphytum caucasicum summer blue comfrey plant park green caucasian nature leaf group head landscape design outdoors ornamental science selective leaves spring candid bloom blossom botany bright flower bud color decoration harvest berry fruit beauty bloomer food wild closeup fresh beautiful ripe agriculture grass focus close tender field colorful flowers blooming beinwell park copy space