An official website of the United States government

The .gov means it’s official.
Federal government websites always use a .gov or .mil domain. Before sharing sensitive information online, make sure you’re on a .gov or .mil site by inspecting your browser’s address (or “location”) bar.

This site is also protected by an SSL (Secure Sockets Layer) certificate that’s been signed by the U.S. government. The https:// means all transmitted data is encrypted  — in other words, any information or browsing history that you provide is transmitted securely.

U.S. Department of Agriculture
National Invasive Species Information Center
You are here
Home » Resources » Invasive Species Resources

Invasive Species Resources

Displaying 141 to 160 of 356

Search Help
Invasive Plants and Insects: Hemlock Woolly Adelgid
Pennsylvania State University. Cooperative Extension.
Invasive Plants and Insects: Japanese and Giant Knotweed
Pennsylvania State University. Cooperative Extension.
Invasive Plants and Insects: Japanese Barberry
Pennsylvania State University. Cooperative Extension.
Invasive Plants and Insects: Mile-A-Minute
Pennsylvania State University. Cooperative Extension.
Invasive Plants and Insects: Oriental Bittersweet
Pennsylvania State University. Cooperative Extension.
Invasive Plants and Insects: Tree-of-Heaven
Pennsylvania State University. Cooperative Extension.
Invasive Plants Association of Wisconsin
Invasive Plants Association of Wisconsin.
Invasive Plants in Pennsylvania: Black, Brown and Spotted Knapweed (PDF | 1.2 MB)
Pennsylvania Department of Conservation and Natural Resources.
See also: Invasive Plant Fact Sheets for plant species (trees, shrubs, vines, herbs and aquatic plants) that have impacted the state's natural lands
Invasive Plants in Pennsylvania: Brazilian Waterweed (PDF | 540 KB)
Pennsylvania Department of Conservation and Natural Resources.
See also: Invasive Plant Fact Sheets for plant species (trees, shrubs, vines, herbs and aquatic plants) that have impacted the state's natural lands
Invasive Plants in Pennsylvania: Canada Thistle (PDF | 576 KB)
Pennsylvania Department of Conservation and Natural Resources.
See also: Invasive Plant Fact Sheets for plant species (trees, shrubs, vines, herbs and aquatic plants) that have impacted the state's natural lands
Invasive Plants in Pennsylvania: Cheatgrass and Poverty Brome (PDF | 903 KB)
Pennsylvania Department of Conservation and Natural Resources.
See also: Invasive Plant Fact Sheets for plant species (trees, shrubs, vines, herbs and aquatic plants) that have impacted the state's natural lands
Invasive Plants in Pennsylvania: Common Buckthorn (PDF | 667 KB)
Pennsylvania Department of Conservation and Natural Resources.
See also: Invasive Plant Fact Sheets for plant species (trees, shrubs, vines, herbs and aquatic plants) that have impacted the state's natural lands
Invasive Plants in Pennsylvania: Common Reed (PDF | 671 KB)
Pennsylvania Department of Conservation and Natural Resources.
See also: Invasive Plant Fact Sheets for plant species (trees, shrubs, vines, herbs and aquatic plants) that have impacted the state's natural lands
Invasive Plants in Pennsylvania: Curly Pondweed (PDF | 191 KB)
Pennsylvania Department of Conservation and Natural Resources.
See also: Invasive Plant Fact Sheets for plant species (trees, shrubs, vines, herbs and aquatic plants) that have impacted the state's natural lands
Invasive Plants in Pennsylvania: Didymo (PDF | 153 KB)
Pennsylvania Department of Conservation and Natural Resources.
See also: Invasive Plant Fact Sheets for plant species (trees, shrubs, vines, herbs and aquatic plants) that have impacted the state's natural lands
Invasive Plants in Pennsylvania: Empress or Princess Tree (PDF | 290 KB)
Pennsylvania Department of Conservation and Natural Resources.
See also: Invasive Plant Fact Sheets for plant species (trees, shrubs, vines, herbs and aquatic plants) that have impacted the state's natural lands
Invasive Plants in Pennsylvania: Eurasian Water-milfoil (PDF | 105 KB)
Pennsylvania Department of Conservation and Natural Resources.
See also: Invasive Plant Fact Sheets for plant species (trees, shrubs, vines, herbs and aquatic plants) that have impacted the state's natural lands
Invasive Plants in Pennsylvania: European Water Chestnut (PDF | 107 KB)
Pennsylvania Department of Conservation and Natural Resources.
See also: Invasive Plant Fact Sheets for plant species (trees, shrubs, vines, herbs and aquatic plants) that have impacted the state's natural lands
Invasive Plants in Pennsylvania: Garlic Mustard (PDF | 160 KB)
Pennsylvania Department of Conservation and Natural Resources.
See also: Invasive Plant Fact Sheets for plant species (trees, shrubs, vines, herbs and aquatic plants) that have impacted the state's natural lands
Invasive Plants in Pennsylvania: Giant Hogweed (PDF | 180 KB)
Pennsylvania Department of Conservation and Natural Resources.
See also: Invasive Plant Fact Sheets for plant species (trees, shrubs, vines, herbs and aquatic plants) that have impacted the state's natural lands