selective blur on blooming annual ragweed, also called amrbosia or artemisia. it is a pollen flower and plant from the aster

ragweed bloom artemisia ambrosia selective focus plant green weed allergy detail botany field wildflower growth flowering summer invasive foliage natural pollen environment annual health rural seasonal agricultural allergen allergenic allergic amrbosia asteraceae bitterweed bloodweed blooming botanical closeup flora flower hay fever herb leaf leaves season uncultivated wild