Casuarina equisetifolia, Australian Pine


Invasive Species: Casuarina equisetifolia, Australian Pine

Australian pine is an invasive deciduous tree that occurs in open coastal habitats including sand beaches, rocky coasts, and sand dunes. Trees can grow to over 100 ft. (30.5 m) in height. The …

Cynanchum louiseae, Black Swallowwort


Invasive Species: Cynanchum louiseae, Black Swallowwort

Black swallowwort is an invasive herbaceous, twinning, perennial vine. Leaves are opposite, dark green, oval, shiny, entire, 3 to 4 in. (7.6 to 10.2 cm) long, and 2 to 3 in. (5.1 to …

Humulus japonicus, Japanese Hop


Invasive Species: Humulus japonicus, Japanese Hop

Japanese hop is an invasive annual, climbing or trailing vine that is native to eastern Asia. This vine has five-lobed leaves (generally), downward pointing prickles on the stem and bracts at the base …

Solanum dulcamara, Bittersweet Nightshade


Invasive Species: Solanum dulcamara, Bittersweet Nightshade

Bittersweet nightshade is an invasive perennial plant native to Eurasia. Plants can reach up to 6.6 ft. (2 m) tall, either erect or clambering. Leaves are petiolate, alternate, three-lobed (upper part of the …

Vinca major, Bigleaf Periwinkle


Invasive Species: Vinca major, Bigleaf Periwinkle

Bigleaf periwinkle is an invasive evergreen to semi-evergreen trailing vine that reaches to over 6.6 ft. (2 m) in length. The stems are stout, somewhat woody, and green. The opposite, glossy leaves are …

Cardaria draba, Hoary Cress


Invasive Species: Cardaria draba, Hoary Cress

Hoary cress, or whitetop, is an invasive perennial forb in the mustard family that can grow up to 2 ft. (0.6 m) tall. The leaves are soft, gray-green, 1.5 to 3 in. (3.7 …

Artemisia absinthium, Absinth Wormwood


Invasive Species: Artemisia absinthium, Absinth Wormwood

Absinth wormwood (absinthium, common wormwood) is an invasive herbaceous perennial plant that can grow up to 5 ft. (1.5 m) tall. It has many branching stems arising from a woody base. Leaves are …

Arctium minus, Lesser Burdock


Invasive Species: Arctium minus, Lesser Burdock

Lesser burdock is a tall (up to 6 ft. [1.8 m]) invasive biennial forb that occurs throughout the United States. First-year plants form large rosettes. A stout flowering stalk is formed in the …

Allium vineale, Wild Garlic


Invasive Species: Allium vineale, Wild Garlic

Wild garlic is an invasive perennial plant that originates from a bulb. Plants range from 11 to 35 in. (30 to 90 cm) in height and have tubular leaves. In May to June, …