Chemical-Free Lawns Healthier

Once upon a time in America, lawns grew thick and green--without chemicals. True, they had a few more weeds and dandelions. But they were healthy, and for generations, they were good enough.

Now “good enough” is making a comeback. Worried about the toxicity of some lawn-care chemicals, many homeowners are minimizing or eliminating their use.

The surprise benefit? Earthworms reappear, and lawns become stronger and healthier--though not overnight.

Here are some healthy tips:

* Grass selection. Choosing the right grass for the climate and soil is the key.The local U.S. Department of Agriculture Cooperative Extension Service can help homeowners select the right grass.

* Fertilization. Use organic fertilizers. In most cases, fertilize just once a year.

* Mowing. This can be the most helpful--or harmful--thing a person does. Scalping grass starves it and invites diseases and pests. The bottom line: Never cut more than the top third off the grass.

* Watering. Too much or too little is harmful. The secret: Water early in the morning and only when the lawn is dry.

* Aeration. Earthworms naturally aerate soil. If there are no earthworms in the lawn (and there won’t be if chemicals have been used), use an aerator once a year.