New York Metropolitan Flora

Cyperus rotundus L. - Purple Flatsedge

Non-native , Historical

By Steven D. Glenn

Not peer reviewed

Last Modified 04/08/2013

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Cyperus rotundus
This non-native is dubbed by some as the "world's worst weed".  Found in our area on disturbed areas in the late 19th and early 20th centuries, luckily it is not cold hardy enough to survive in our flora.

Common Names

Purple Flatsedge