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

allergen allergenic allergic allergy ambrosia amrbosia annual are artemisia aster asteraceae bitterweed bloodweed bloom blooming blur botanical botany closeup detail distributed family fever flora flower flowering genus green hay herb leaf leaves nature outdoors plant plants pollen ragweed ragweeds regions season seasonal selective subtropical summer they tropical uncultivated weed wild wildflower