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The aliens have landed in Wisconsin! You may see them and not even know they are aliens. These invaders are actually exotic plants and animals that have been introduced to our state from other countries or habitats on purpose or by accident. They can cause all kinds of problems for plants and animals that have always lived in our state. Read these stories and find out how to pick aliens out of a crowd, learn how to identify impostors, and how to help exterminate these alien invaders before they take over! (Plants and animals that are aquatic invaders are in blue.)

 

How can you help slow down nasty invaders? Don't pick up hitchhikers!.

Rusty Crayfish

Alien Plants

  • Common Buckthorn (Leaves EEK!)
  • Eurasian Water-milfoil
  • Garlic Mustard
  • Japanese Stilt Grass (Leaves EEK!)
  • Japanese Hedge Parsley (Leaves EEK!)
  • Leafy Spurge
  • Multiflora Rose (Leaves EEK!)
  • Purple Loosestrife
  • Spotted Knapweed
  • Tartarian Honeysuckle (Leaves EEK!)
  • Wild Parsnip

    Learn more about Invasive Species in Wisconsin (Leaves EEK!)

  • Alien Animals

  • Asian Long-horn Beetle (Leaves EEK!)
  • Earthworm (Leaves EEK!)
  • Emerald Ash Borer
  • Feral Pig (Leaves EEK!)
  • Gypsy Moth
  • Hemlock Wooly Adelgid (Leaves EEK!)
  • Multicolored Asian Lady Beetle
  • Quagga Mussel
  • Round Goby
  • Rusty Crayfish
  • Sea Lamprey
  • Spiny Water Flea
  • Zebra Mussel




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