Earthworms are good for the soil. In fact, the presence of earthworms in the soil is an indicator that you have healthy soil. If you dig your shovel into dirt and come up with five or more, it indicates you have pretty healthy soil. If you come up with zero earthworms, although not conclusive, its a good sign that your soil is poor quality.
Earthworms help the soil is a few important ways. If youve got compacted soil, earthworms will help to aerate it - which, in turn, helps the lawn to breathe. Aeration also help water and nutrients to reach the grass and plant roots, ensuring that they will be strong. Earthworm castings help to provide nutrients to your lawn. Lastly, earthworms help to rid your lawn and garden of thatching which can choke the lifeblood out of plants.
If you are into diy lawn care and use pesticides on your lawn, be aware that many chemical pesticides can be harmful to the beneficial organisms, such as earthworms, that live in your lawn. Chemical pesticides and fertilizers can also damage soil structures.
If you want to help the earthworms in your lawn, leave the grass clippings on the lawn when you mow it. Grass clippings contain nitrogen which is an excellent nutrient for plants. Grass clippings are also a good source of food for the earth worms and help to stimulate activity.
Modern man has become much too reliant on chemical means, with it often leading to poor health consequences for him. Taking a step back and allowing you lawn to thrive using more natural means can be a help to everyone.

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