Unlike many exotic plant species that can be spread by the wind
or animals, earthworms are most definitely spread primarily by
human activities. So even simple actions on your part can make a
BIG difference when it comes to containing the spread of exotic
earthworms! Tell others “the dirt” on invasive earthworms in the
Great Lakes region. Download the FAQ sheet and poster to
distribute…send us an email letting us know whedre you are doing
distributing things… Contact Us. Avoid activities that we know
spread earthworms Just because one or even a few earthworm
species are present in a site, does not mean that ALL potential
earthworms are present. Research clearly shows that the more
species of earthworms, and ecological groups, found in a site
the greater the potential impacts are, especially to native
plant species. This is because different earthworms have
different feeding and burrowing behaviors and the synergistic
effects when multiple earthworm species are present is greater
than the sum of the effects of