bidens is a genus of flowering plants in the aster family, asteraceae. berlin, germany

floral tickseed sunflowers gardening bidens black jack burr marigolds cobbler's pegs spanish needles stickseeds tickseeds asteraceae berlin bloom blooming blossom decoration botany family flower flowering plants garden genus germany gold green herbaceous sunflower large-flowered leaves natural nature perennial plant season species summer yellow colorful marigold orange petal red spring sunny beggarticks aster