

Frequently Asked Questions About Earthworms
Back to FAQ's About Worms


Q. Where did our earthworms come from?


Q. What do earthworms eat?


Q. How do worms eat?


Q. How much do earthworms eat in one day?


Q. Why do earthworms stay underground and seldom come out of the soil?

A. Darkness lets them avoid being dried out by the sun. If their skin dries out, they can no longer breathe. Light paralyzes them if they're in it more than an hour. Then they can't move back to the safety of the soil.







Q. Why do robins tug at earthworms in the soil?


Q. Can earthworms survive freezing?

A. If frozen, they will die. Earthworms fall into the category of freeze-avoiding invertebrates. Some adults survive freezing temperatures by going below the frost line in winter to "sleep." Earthworm cocoons, however, are much more tolerant to freezing and worm eggs within a cocoon survive deep in the soil over winter to hatch in the spring when conditions are right.

Q. When are worms most active?

A. In the fall and spring. Cool temperatures of 50, 60, 70 degrees F and moist conditions are best for earthworms. Earthworms aren't active when it's cold or dry.


A. Earthworms escape by either burrowing deeply into the soil (up to about 6 feet or 2 meters), or entering a reduced metabolic state known as estivation. Estivation is a form of hibernation that takes place when temperatures get too hot or too dry for earthworms. When conditions are favorable, the worms will emerge and resume normal activities.

Q. What happens during estivation?

A. Each worm curls up into a tight ball deep in the soil and slows down its metabolism and bodily functions to survive high heat and drought.

Q. What are some earthworm enemies?




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