photo of ketul, bidens pilosa, also known as blackjack

flower plant wildflower meadow nature yellow petal grass blossom herb green field daisy prairie lawn ketul bidens pilosa blackjack bright flowers stand lush backdrop sunlight highlighting delicate petals garden invasion blooming close-up pollen freshness wild arrangement asteraceae pilosa blackjack beggar-ticks wildflower flowers backdrop nature beauty pollinators sunlight resilience botanical flora petals outdoor vibrant color summer blooms landscape biodiversity natural habitat growth ecological close-up seasonal garden