Interest in organic lawn care is growing
Growing numbers of homeowners are turning to organic lawn care.
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"The main thing that really needs to shift in terms of the way that you approach your lawn is that what you are striving for is how to make my grass as healthy as possible, rather than how do I get rid of these weeds," she said.Skip to next paragraph
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Weeds can help diagnose what's wrong with a lawn.
"Some weeds tell you your lawn is acidic," said Tukey. "Some weeds tell you your lawn is compacted. Some weeds tell you it's too wet."
Clover can be a sign the lawn needs nitrogen. Tukey calls clover "Mother Nature's fertilization factory."
In the middle of the 20th century, most grass seed was mixed with clover, which provides needed nitrogen to the soil, according to Goatley. "We're coming full circle," he said. "It makes perfect sense going in to fix the nitrogen."
Start with healthy soil
Good soil is the first step to a healthy lawn — organic or not.
Conduct a soil test, Goatley advised. "You've got to know what you're working with." You can do that through your local lawn and garden center or through state agriculture extension service programs.
Among the things you'll want to know: how much organic matter is in the lawn, the levels of such things as nitrogen, phosphorous and calcium, and the pH to determine if the soil is too acidic. A good pH to promote turf growth is generally considered to be between 6.5 and 7, Butterfield said.
The centers can give you advice on how to achieve the proper levels.
You'll also want to make sure your soil is properly aerated. Aerating a lawn provides room for roots to grow and allows it to hold water better. Earthworms do the aeration naturally. So does plantain. But if your lawn needs more help, there are aerating machines that you can buy or rent. Goatley recommends doing the aeration when the soil is moist.
To promote good growth, he said, soil should be about 50 percent solid material, 25 percent water and 25 percent pore space. A layer of compost helps give soil the ingredients it needs to provide a healthy environment for grass. Goatley recommends applying compost at a a depth of one-quarter inch once or twice a year.
For an organic fertilizer, some suggest corn gluten. However, using it in an urban area with rodents can be a problem, cautions Sandy Bandier, environmental and natural resources extension agent for the District of Columbia. Corn gluten can be feed for rats.
For many, the choice of going organic or synthetic doesn't have to be all or nothing. Some argue that if you are careful about using conventional fertilizers, they aren't all bad. "It's not a black and white picture," Butterfield said.
Besides, only about half of US households fertilize their lawn at all, he added. "They figure it's God's responsibility to make it look good."