Hence, my obsession with Craspedia (also known as billy buttons, woollyheads, or {my personal fave} yellow pom pom flowers. You buy it fresh, arrange it, and then leave it. Simple as that.

Sweet Acacia (Acacia farnesiana) is one of our native trees that is very fragrant and produces small yellow pom-pom flowers. It grows 15 to 25 feet tall with a 15- to 25-foot spread.