Content tagged "aquatic invasive plant"

Murdannia keisak, Marsh Dewflower

Invasive Species Updated: December 16, 2015

Marsh dewflower (wart-removing-herb) is an annual, emergent plant that invades wetlands in the southeastern and northwestern United States. Plant stems are...

Salvinia molesta, Giant Salvinia

Invasive Species Updated: December 16, 2015

Giant salvinia is an aquatic fern with floating leaves that are 0.5 to 1.5 in. (2.5 to 3.8 cm) long and oblong and vary in color from green to gold to brown....

Myriophyllum aquaticum, Parrotfeather Watermilfoil

Parrotfeather watermilfoil is an herbaceous, rooted, submerged/emergent plant that invades aquatic habitats throughout much of the United States. Stems are...

Solanum tampicense, Wetland Nightshade

Wetland nightshade is a sprawling, semi-woody shrub that invades wetlands in Florida. The green stems are up to 15 ft. (4.6 m) long and prickly. Leaves are...

Cyperus entrerianus, Deeprooted Sedge

Deeprooted sedge is a wetland sedge that invades disturbed areas throughout the southeastern United States. It is a robust, up to 40 in. (102 cm) tall,...

Spartina alterniflora, Smooth Cordgrass

Smooth cordgrass is a perennial grass that is native to the Atlantic and Gulf Coasts of North America but is invasive along the Pacific Coast. Hollow stems...

Myriophyllum heterophyllum, Variable Watermilfoil

Variable watermilfoil is an invasive perennial aquatic herb that has leaves of two noticeably different forms. The submerged leaves are finely dissected,...

Najas minor, Brittleleaf Naiad

Brittleleaf naiad is an invasive annual forb that is native to Europe. The highly branched stems can grow up to 4 ft. (1.2 m) in length and fragment easily;...

Arthraxon hispidus, Small Carpgrass

Gardens & Landscapes Invasive Species Updated: October 05, 2012

Small carpgrass is an invasive annual grass that was introduced into the United States, either accidentally or by immigrants, from Japan and eastern Asia....

Paspalum quadrifarium, Tussock Paspalum

Gardens & Landscapes Invasive Species Updated: October 05, 2012

Tussock paspalum is an invasive perennial plant that grows in large, bluish-green bunches, or tufts, reaching 6 ft. (1.8 m) in height. Leaves are 5.9-15.7...

Hydrilla verticillata, hydrilla

Invasive Species Updated: August 16, 2012

Hydrilla is a submersed, rooted invasive aquatic plant that can grow in water to depths of 20 ft. (6.1 m). Plants can survive in depths to 40 ft. (12 m) in...

Colocasia esculenta, Coco Yam

Coco yam is an invasive perennial forb that originates from a large corm and can grow to 4 ft. (1.5 m) in height. Leaves, supported by petioles that are 3...

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This work is supported by the USDA National Institute of Food and Agriculture, New Technologies for Ag Extension project.