Tall Thimbleweed is a native, perennial wildflower with erect, multiple stems, rising two to three feet, topped by a greenish-white flower with a slightly elongated center resembling a short thimble. The flowers are 1-1/2 inches across. Leaves are deeply cut and clustered in a whorl halfway up the stem. It grows in woodlands, forest edges, prairies, meadows, and fields in sun and part shade in dry to moist, rich acid soils. (July)