Sneezeweed | When some perennials start to go downhill in late summer this plant is just getting good! Blooming August-October, it really adds that much needed color in late season. Why is it called sneezeweed? In past times the leaves of this plant were dried, crushed up, and used as snuff. This snuff would be inhaled up the nose to induce sneezing that was thought to rid the body of ailments. A little history lesson so you aren't afraid of this plant causing your allergies to go bonkers.