How to Use a Seed Germination Blanket Over Existing Grass

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Seed germination blankets help to increase the germination rate of newly planted seed on existing grass lawns. These blankets lie on top of grass seed and protect it from erosion, weeds, runoff and hungry birds. One benefit of using seed germination blankets is you do not need to remove them after the grass seed begins to grow--they biodegrade into the ground over time. According to DuPont Garden Products, seed germination blankets improve the rate of grass seed germination up to 200 per cent.

Measure the area you wish to add new grass seed with a measuring tape. Cut the seed germination blanket according to the grass area measurements using scissors. Many seed germination blankets come available in 4-by-50 foot rows.

Remove all weeds and dead grass from the area in which you wish to reseed with your hands. Apply an even layer of seed starter fertiliser to the prepared area using a hand spreader.

Rake the area with a garden rake to loosen the soil so the grass seed will have maximum seed-to-soil contact. Raking the soil also helps to incorporate the seed starter fertiliser into the soil for best results.

Fill the hand spreader halfway with grass seed. Spread the grass seed evenly over the prepared area. Use more grass seed if necessary.

Place the cut seed blanket over the reseeded area, net side facing up. If your area requires more than one seed germination blanket, overlap the edges by 3 or 4 inches.

Insert biodegradable stakes into the seed germination blanket to secure it to the lawn. Use one stake, spaced every 3 feet on each side. Do not remove these stakes when the grass begins to grow through the blanket, as they will biodegrade along with the blanket.

Water the reseeded area with a light spray from the garden hose one or two times per day, reducing the amount of water to one or two times per week as the new grass reaches 2 or 3 inches in height.

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