Lawn - Knowledgebase Question

duluth, Ge
Question by teferefe
October 14, 2009
My lawn is kind of hilly and It has some parts that seem grass does not grow. It look like it is on the rainfall path. What can I do?


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Answer from NGA
October 14, 2009

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There are two things you can do to improve the situation. The first is aerating the lawn so the water has a place to go. A core aerator will remove one inch by three inch plugs from the lawn. Leave the plugs on the lawn and they will dissolve in rain or water from the sprinklers. After aerating spread a thin layer of sand or compost over the area and water it in well. The sand or compost plus the soil from the plugs will work their way down into the holes left by the plugs. This improved soil will give the rainwater a place to collect. Or, you might consider installing a curtain or French drain. French drains are quite simple: in essence they are just trenches filled with gravel, with sand on top of that. Often, you'll see French drains defined to include a drain pipe as well, though the traditional design is simply the gravel-filled trench. The advantages of French drains are low cost and easy installation. In addition, they can be covered over with turf after installation, making them less conspicuous. A French drain starts with digging a trench. The depth and width of the trench can vary, but 5 to 6 inches wide and 8 to 12 inches deep are common sizes and usually satisfy most needs. Add gravel to the trench to within a few inches of the surface. Gravel for this use is typically 0.5 to 1 inch in size. On top of the gravel, lay at least 3 or 4 inches of coarse sand. This provides a medium in which turf can grow so that the trench will not be visible. But remember that the sand must be coarse or it won't allow water to properly drain through. Turf may be seeded into the sand or simply allowed to grow in from the adjacent stand, if the turf is a spreading type. Or, you can lay sod over the sand. Since the area is hilly you may have to install more than one curtain drain - one about mid-way and one at the base. Hope this information is helpful!

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