worms · February 16, 2013
Red Wiggler worms (Eisenia fetida) from our compost pile at Distant Hill Gardens in Walpole, New Hampshire.
Earthworms are so ubiquitous here in North America that we take them for granted. But chances are that if you live in the US or Canada, many of the earthworms you see are not native species. According to Wikipedia, of the 182 taxa of earthworms found in the United States and Canada, almost 33% are invasive species, being primarily from Europe and Asia. When they become too abundant, these non-native earthworms can lead to reductions in native plants species and some trees. Native plants in the...