A always moist or moist yard isn’t ideal for verdant green grass, but it’s perfect for molds, moss and mildew. Whether your yard was never properly graded or it’s settled or eroded over time, then there are methods you could get your grass looking healthy again without undermining or soggy spots. A yard drainage system will transfer the water from packaged soil areas and allow your lawn to rebound back to life.
Locate places where your lawn is retaining too much water, with water standing on the ground for more than an hour following a rain.
Walk out from each wet area in two directions and mark a spot for a leaky drainage hole. Use a stone to mark the spot. Set the holes 3 to 6 feet in the center of the wet areas.
Dig 3-foot-deep, 1-foot-wide holes at the drainage locations. Scoop off the sod before digging the hole and set it aside. Dig under the grass about 2 ins to ensure you remove the roots of the grass in addition to some soil; this will help it survive when you place it back in place later on.
Scoop from the surface grass starting at the center of the wet areas, and work your way toward each of the two drainage holes. Make the line 1 foot wide. Repeat the process for each wet area and set the grass aside for later.
Excavate the soil along each line down to a thickness of 10 inches, forming trenches.
Scoop more soil from the trenches to form a slope in the moist area to the drainage holes. The slope must fall one-quarter inch for each 4 feet. Check your progress with a 4-foot degree.
Add 2 inches of sand and gravel mixture to the base of the trenches. Both of these materials will allow water to flow freely. The sand simply fills in some of the larger gaps so that soil is not able to work its way to the region.
Put 4 inch diameter perforated pipe in the trenches so that the holes are down. Slip mesh heels above the pipes so that sand, soil and some other little debris is not able to tighten the holes.
Fill across the surfaces of the pipe and on leading with more gravel and sand mix. Add material to your height 2 inches above the pipe.
Add two inches of sand above the gravel, bringing the trenches back up to surface. Set the sod back above the sand.
Add sand and gravel mixture to the drain holes until it is to the peak of the trench where the two inches of sand starts. Add 2 inches of sand and place the sod back on top.