Boehmeria cylindrica, with common names false nettle and bog hemp,[2] is an herb in the family Urticaceae.

Leaves are usually opposite, though occasionally alternate, and the inflorescence is a spike with a tuft of small bracts at the apex.

It is native to northeastern Canada through the majority of the United States from Maine to Florida and stretching towards South Dakota to California.

Larvae of the fly Neolasioptera boehmeriae, form small galls in the shape of spindles.

[9] The generic name Boehmeria honors the German botanist, Georg Rudolf Boehmer (1723-1803).

[10] The specific name cylindrica is based on its generally cylindrical spikes located in the leaf axils.