Thimbleweed

Tall thimbleweed, Thimbleweed, Tall anemone
This perennial’s erect, multiple stems, rising 2-3 ft., are topped by a greenish-white flower with a slightly elongated center resembling a short thimble. After frost, the thimble matures to a cottony tuft. Leaves are deeply cut and clustered in a whorl halfway up the stem.

The distinctive, thimble-shaped group of pistils accounts for the common name. Long-headed Thimbleweed (A. cylindrica) has narrower leaf segments and fruit in a long, cylindrical cone 1 1/2 (4 cm) long; it is found from Alberta east to Quebec and south to New Jersey and Kansas.