verbena bonariensis flowers, argentinian vervain or purpletop vervain, clustertop vervain, tall verbena, pretty verbena, in garden

argentinian background beautiful beauty bloom blooming blossom blurred bonariensis botany closeup clustertop color colorful detail elegant field flora floral flower fresh garden green growth landscape leaf natural nature officinalis petal plant pretty purple purpletop season small spa spring summer sunshine tall therapy verbena verbenaceae vervain vervian violet