Organic Lawn Care
There are three clear benefits from going organic: your lawn will be healthier, the environment will be healthier, and you will be healthier. On top of these, there's the distinct possibility that you'll save time or money -- maybe both. This is a "maybe" that depends largely on how much time and money you've already been spending on your lawn, but the first three are certainties.
Your lawn will be healthier. Many lawns are "addicted" to massive infusions of fertilizers and to frequent watering. These common practices lead to lawns that are not able to defend themselves against pests, as well as lawns with shallow roots that are vulnerable to drought. A well-planned organic lawn has healthy soil and deep-rooted healthy grass able to withstand most local conditions and robust enough to crowd out weeds and to shrug off the occasional pest.
The environment will be healthier. Your lawn may be small, but the cumulative impact of pesticide, fertilizer, and water use on all the lawns across North America is huge. If you don't use chemicals on your lawn, they can't run off and hurt the wild lands or water sources near you, nor can they harm you, your family, or your neighbors.
Yours may be one small yard, but your efforts to take care of it in an organic fashion -- by growing native plants and grasses, watering properly, shunning industrial pesticides and fertilizer -- will make a difference.
You'll be healthier. The stuff that's toxic to earthworms and soil microbes is not recommended for humans, either. Organophosphates, the chemical compounds that are the basis for most modern insecticides, are neurotoxins designed to be lethal to living organisms, and they work on people as well as on insects. Some of the most common herbicides that make up the "weed" part of common "weed n' feed" products can be dangerous as well. Even 2,4-D, the most widely used herbicide in the world, can cause serious skin irritation and permanent eye damage, and is often combined with other, more toxic herbicides or with unnamed inert ingredients that can be more dangerous than the ones listed on the label.
With organics, you will have natural allies that will often fight your battles for you, so you will need fewer herbicides and pesticides. Ladybugs and lacewings will eat all kinds of troublesome insects, but not if your yard is a toxic zone for all insects. Many beetles and other lawn pests can be controlled with diatomaceous earth or Bacillus Thuringiensis (BT), a bacterial agent that will take out many garden pests but doesn't harm earthworms or the helpful insects mentioned above. (Some forms are effective against malaria-carrying mosquitoes.) If you switch to a regionally appropriate grass, you're likely to use less water and fertilizer, as well. This is very much a "results may differ" sort of situation, but for some people at least, organic care is easier than synthetic. For just about everyone, it is easier than they thought it would be.