Mosquito bulrush

Prepared by Jennifer L. D’Appollonio, Assistant Scientist, University of Maine, Orono, ME 04469. Updated February 2018.

Scientific name: Scirpus hattorianus Makino

Common name(s): mosquito bulrush, early dark-green bulrush

Link(s): USDA PLANTS Profile, NPIN Profile, Go Botany

Images: (to see enlargements [PC]: click on image, then right click and choose “view image”)


– perennial

-leaf blade is 5–9 mm in width


– has thinner leaves than other Scirpus with partition “ribs” across the base of lower leaves

– may be confused with S. atrovirens; see left sidebar on Go Botany webpage


-disturbed sites




Natural History:

-native to North America

-widely introduced in Japan



Go Botany. “Scirpus Hattorianus Makino.” Scirpus Hattorianus (Mosquito Bulrush): Go Botany, National Science Fooundation, 2021,


Eric T. Doucette, Ph.D. – Assistant Professor of Biology, MA College of Liberal Arts, North Adams, MA (updated Feb 2018)