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Loughmiller, Campbell and Lynn
Phragmites australis (Cav.) Trin. ex Steud.
Common reed, Phragmites
Synonyms: Phragmites communis
USDA Symbol: PHAU7
USDA Native Status: Native to U.S.
Common reed or pragmites is a tall, robust, perennial grass commonly growing up to 13 ft. in height. Stiff, wide leaves and a big, plumy inflorescence characterize this colony-forming plant which spreads by stout rhizomes. The inflorescence is purple in flower, gray in fruit.
This tall and striking plant rarely produces seed but spreads vigorously by underground stems (rhizomes), often running over the surface of the ground for 17-34 (5.1-10.2 m). It can form dense stands that exclude all other wetland species. It is the dominant vegetation of the still extant Hackensack Meadows of New Jersey where it filters pollutants from the greater New York-New Jersey metropolitan area. While this role may appear beneficial, it has no doubt out competed the native vegetation that would ordinarily serve this purpose. In New England, tidal gates across estuaries have restricted tidal flow and created heavily brackish conditions on tidal marshes, with the result that Common Reed has replaced extensive areas of tidal marsh grasses. It was formerly known as P. communis.
Bloom InformationBloom Color: White , Purple
Bloom Time: Jun , Jul , Aug
AL , AZ , CA , CO , CT , DC , DE , FL , GA , IA , ID , IL , IN , KS , KY , LA , MA , MD , ME , MI , MN , MO , MS , MT , NC , ND , NE , NH , NJ , NM , NV , NY , OH , OK , OR , PA , RI , SC , SD , TN , TX , UT , VA , VT , WA , WI , WV , WY Canada: AB
, YT Native Distribution:
E. Que. to B.C., s. to VA, KY, LA & AZ; also scattered localities in the Southeast Native Habitat:
Fresh to alkaline marshes; pond margins; ditches USDA Native Status: L48(N), HI(I), PR(N), CAN(N)
Growing ConditionsWater Use: Medium
Light Requirement: Sun
Soil Moisture: Moist , Wet
CaCO3 Tolerance: Medium
Soil Description: Wet soil to standing water; adapts to less moisture.
Conditions Comments: This is a common and sometimes unpopular grass because it can be very invasive in wet, disturbed areas. It is resistant to all kinds of disturbance itself, often coming back more vigorously if cut or burned. It is less invasive and grows to a reduced height in average garden moisture.
BenefitUse Wildlife: Provides good cover for wetland wildlife species.
Conspicuous Flowers: yes
Butterflies and Moths of North America (BAMONA)
is a larval host and/or nectar source for:
PropagationDescription: Phragmites can be grown from seed although germination is low.
Seed Collection: Store dry.
Seed Treatment: Not Available
Commercially Avail: yes
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Record Modified: 2007-01-01
Research By: TWC Staff