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A Healthy Lawn Helps the Environment - Wellhead Protection

By Carlos Stone,2014-05-20 14:00
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Healthy grass provides feeding ground for birds, who find it a rich source of insects, worms, and other food. Thick grass prevents soil erosion,

    Wellhead Protection WHPP 902

A Healthy Lawn Helps the Environment*

     *Developed from ―Healthy Lawn, Healthy Environment‖, US EPA

    Caring for your lawn in an environmentally friendly way

    Picture a healthy green lawn: perfect for lounging, great for ball games and cookouts, a real asset to

    your home. Did you know that your lawnand how you take care of itcan also help the environment?

    Healthy grass provides feeding ground for birds, who find it a rich source of insects, worms, and other

    food. Thick grass prevents soil erosion, filters contaminants from rainwater, and absorbs many types

    of airborne pollutants, like dust and soot. Grass is also highly efficient at converting carbon dioxide to

    oxygen, a process that helps clean the air.

    You don’t have to be an expert to grow a healthy lawn. Just keep in mind that the secret is to work

    with nature. This means creating conditions for grass to thrive and resist damage from weeds, disease,

    and insect pests. It means setting realistic goals for your lawn, whether you or a professional lawn

    care service will be doing the work. And, if you choose to use pesticides, it means using them with care

    so as to get the most benefit and reduce risks. Caring for your lawn in an environmentally sensible way

    can have a bigger impact than you might think. Your lawn is only a small piece of land, but all the lawns

    in your neighborhood cover a lot of ground. That means that you and your lawn care activities, along

    with everyone else’s can make a big difference to the environment, and that is why taking care of the

    environment begins in our own backyards.

     Did you know that the average homeowner uses 10 times the chemicals on their lawn, per acre, than the average farmer?

    Working with Nature: A Preventative Health Care Program for your Lawn

    To start, think about lawn care as a preventative health care program, like one you would use to keep

    up your own health. The idea is to prevent problems from occurring so you don’t have to treat them.

    As they say, an ounce of prevention is worth a pound of cure. Your lawn care program should be

    tailored to local conditionsthe amount of rainfall you get, and the type of soil you have. 1. Develop Healthy Soil

    Good soil is the foundation of a healthy lawn. To grow well, your lawn needs soil with good texture,

    some key nutrients, and the right pH, or acidity/alkalinity balance. Start by checking the texture

    of your soil to see whether it’s heavy with clay, light and sandy, or somewhere in between. Lawns

    grow best in soils that have a mix of clay, silt, and sand. Whatever soil type you have, you can

    probably improve it by periodically adding organic matter like compost, manure, or grass clippings.

    Organic matter helps to lighten a predominantly clay soil and it helps sandy soil retain water and

    nutrients.

    Also check to see if your soil is packed down from heavy traffic or high clay content. To loosen

    compacted soil, some lawns may need to be aerated several times a year. This process involves

    pulling out plugs of soil to create air spaces so water and nutrients can again penetrate to the

    grass roots. Also, most lawns need to be fertilized every year, because they need more nitrogen,

    phosphorus, and potassium than soils usually contain. These three elements are the primary

    ingredients found in most lawn fertilizers. It is best to use a slow-release fertilizer, and it is

    important not to over-fertilize. Grass is best able to absorb nutrients in a slightly acidic soil, with

a pH of 6.5 to 7.0. Soil that is too acidic can be ―sweetened‖ with lime; soil that is not acid enough

    can be made ―sour‖ by adding sulfur. Have your soil tested periodically to see whether it needs

    more organic matter or the pH adjusted. The Jefferson County Extension Office, (502-569-

    2344), or local nursery can provide soil testing or soil kits for testing. If a professional lawn

    service takes care of your lawn, make sure it takes these same steps to develop good soil.

    2. Choose a grass type that thrives in your climate.

    The right type of grassone that suits your needs and likes the local weatherwill always give

    better results. New grass mixtures come out on the market every year. Ask your county

    extension agent or your local nursery for recommendations.

    3. Mow high, often, and with sharp blades.

    Keeping your lawn a bit long will produce stronger, healthier

    grass with fewer pest problems. A lawn’s ideal length will

    vary with the type of grass, but many turf grass species are

    healthiest when kept between 2? to 3? inches. It’s also

    important to mow with sharp blades to prevent tearing and

    injuring the grass. And it is best to mow often. The rule of

    thumb is to mow often enough that you never cut more than

    1/3 of the height of the grass blades. Leave short clippings

    on the grass, where they recycle nitrogen.

    4. Water deeply, but not too often.

    Watering properly will help your lawn grow deep roots that make it stronger and less vulnerable to

    drought. It is best to water only when the lawn really needs it, and then to water slowly and deeply.

    Water only when the lawn begins to wilt from drynesswhen the color dulls and footprints stay

    compressed for more than a few seconds. Try to water your lawn in a way that imitates a slow,

    soaking rain by using trickle irrigation, soaker hoses, or other water conserving methods. Try to

    water in the early morning, especially during hot summer months, to reduce evaporation. You can

    place a pie plate in the line of the spray to measure how much water has been applied-- usually

    about 1 inch of water is the best for your lawn.

    5. Correct thatch build-up.

    When thatch gets too thickdeeper than ? inchit prevents water and nutrients from

    penetrating to the soil and grass roots. Some grasses tend to form a thick layer of thatch, while

    overuse use of fertilizers can also create a heavy layer of thatch. You can reduce thatch by raking

    the lawn or using a machine that slices through the thatch. Sprinkling a thin layer of topsoil or

    compost over the lawn will also help.

    6. Set realistic goals.

    Did you know that a lawn with 15% weeds can look practically weed-free to the average observer?

    Even a healthy lawn is likely to have some weeds or insect pests. It will also have beneficial insects

    and other organisms that help keep pests under control. Also realize that some areas of your lawn

    are just not conducive to growing grass. Use a ground cover or mulch instead.

    Check out the mowing gauge on the next page to test your mower height and thatch depth!

    Wellhead Protection Coordinator ? Louisville Water Company rd Street ? Louisville, KY 40202 ? 502-569-3600 ext. 1809 550 S. 3

    A publication of the Local Planning Team, Public Education

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