What flowers will bloom in september in blackfoot idaho?
The average first frost in that area is mid-September. Anything blooming in August will probably still be blooming in September. Most wildflowers are done by then, because it is high desert, and seldom rains in summer, and the wildflowers bloom earlier in the season when it rains more (May, early June). That area gets most of its moisture in the form of snow, not rain.
