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As you can see in the enclosed picture, I am finding small mounds of dirt on my lawn continuously. What kind of animal (rodent) could be causing them and what can I do to eliminate it? R.J. Niantic


Signs of Earthworm Activity Actually, R.J. what you are seeing is great news for your lawn! It means you have earthworms that are active in your soil. Earthworms are amazing creatures that take care of some of your backbreaking garden work without you even breaking a sweat! Earthworms feast on bacteria, fungi and algae in addition to lots of other things. In the process of eating they swallow a certain amount of soil that eventually gets passed out of the earthworm's rectum together with undigested organic material. Worm poop (called "casts") is very high in nutrients which is why gardeners and farmers love earthworms in their soil. In addition to being a fertilizer machine, earthworms tunneling through your soil do a great job aerating and breaking up compacted soil. Most of the time, earthworm deposit their casts underground, but when the weather is cool and wet, you often see their castings on the surface, which is what you see in the picture. Casts are harmless and fertile and can be raked out into your garden or lawn or washed back into your lawn with a hose.

While we're on the subject of earthworms, did you know? Earthworms: have five hearts, breathe through their skin, have light receptors that sense light and dark, have a brain and nerves that detect vibration and even some tastes. Who knew?

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About Linda Lillie

Linda K. Lillie is the President of Sprigs & Twigs, Inc, the premier landscape design and maintenance, tree care, lawn care, stonework, and carpentry service provider in southeastern Connecticut since 1997. She is a graduate of Connecticut College in Botany, a Connecticut Master Gardener and a national award winning landscape designer for her landscape design and landscape installation work.


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