There’s a yardstick among gardeners that good, rich soil with lots of actively decaying organic matter in it should have about a dozen or more earthworms (Lumbricus terrestris) in each cubic foot. But ...
Lansing State Journal on MSN
An Asian earthworm may be ruining your yard, garden. What to know about jumping worms
The worms can jump as much as a foot off the ground. They also can make the soil inhospitable for native plants and insects.
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