flowering great burdock (arctium lappa), selective focus

arctium lappa leaf burdock flower plant summer nature herb botany blossom purple garden bud uncultivated meadow thistle grass thorn medicine inflorescence wildflower season bush agriculture biennial sunlight vegetable beauty bright environment selective focus growth springtime ingredient roadside head red spiked food organic july seed shade vitamin bouquet chlorophyll root sharp closeup honey flowering great commonly called greater blooming flowers natural background