Cyperus entrerianus

Common Name: woodrush flatsedge

Family: Cyperaceae

Common Synonyms: none

USDA Hardiness Zone: 11-5

Growth Habit: Graminoid

Origin: Mexico and South America

FISC Category: -

FDACS Listed Noxious Weed: No

Introduction Date: specimen vouchered in 1972

IFAS Assessment:

• North: INVASIVE
• Central: INVASIVE
• South: INVASIVE

Description

Large, rhizomatous, sedge to 1 m tall. Culms triangular. Leaves glossy with purple-black bases. Inflorescence terminal with 5-11 greenish-white spikes.

Habitat

Disturbed inundated soils, low flatwoods, wet prairie

Comments

Vouchered in panhandle and St. Lucie Co., established in panhandle. An aggressive seed producer, also spreads vegetatively. Rapidly spreading from disturbed to natural areas in Texas.

Control Methods

• Manual: NA
• Chemical: Foliar (2% glyphosate at 2 qts/acre, Gonzalez and DallaRosa) is expected to achieve 98% control.
• Biological: NA

Control Notes

**Follow herbicide labels: Only herbicides registered for application in water by EPA and FDACS may be applied to weeds growing in or near water.

References

Gonzalez, L. and J. DallaRosa. 2007. Cyperus entrerianus Boeckl. (Deep-rooted sedge ). http://www.texasinvasives.org/invasives_database/. Accessed on December 5, 2013.

IFAS, Center for Aquatic and Invasive Plants. IFAS Assessment of Non-native Plants in Florida's Natural Areas: Cyperus entrerianus results table. http://plants.ifas.ufl.edu/assessment/pdfs/wra/Cyperus%20entrerianus_WRA.pdf. Accessed on December 5, 2013.