1. Insolent invaders

2. Slitherin' snakeheads

3. Got crabs?

4. Super swine

5. Too many blooms

6. Bogus buckthorn

7. Argentine ants

8. Weed of a 1,000 leaves

9. Weed-beater success story

Floating and feathery, the Eurasian milfoil chokes lakes with vegetation. Milfoil photo: Sea Grant


"Wanted dead, not alive INVADING SPECIES: Eurasian watermilfoil, Myriophyllum spicatum. Alias: Spike watermilfoil" Poster photos shows a tangle of green fronds.


A submersed, rooted perennial, this invader lives in 0.5 to 3.5 meters of water. Leaves are feathery, stems long enough to reach the surface. Plant forms massive tangles in lakes in 46 U.S. states. Reduces water quality, harms wildlife. A serious outbreak can fill a lake from shore to shore.



Feels like coarse sandpaper to a swimmer. Can snare boats.

More information




What does it take to win the war on weeds?




  The Why Files  

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