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
This invader takes over old farm fields. Left alone, it becomes a nasty
enemy of plants and mammals alike.
Image of Multiflora Rose courtesy Wisconsin
Large, thorny, flowery rose plant that spreads quickly and pushes out
native vegetation, creating impenetrable thickets. Once promoted by state
conservation departments as "living fence."
Considered thorned and dangerous. Builds huge, nasty clumps, up to 10
feet tall, 20 feet diameter. Best to control early; may need bulldozer to eradicate
Dare you to hug this tree!