Lawn seed, dirt, rain - Knowledgebase Question

Fort Hood, Te
Question by allarmywife
April 6, 2010
I have a steeply sloped backyard that I am trying to grow grass seed in (I'm using Pennington All-in-one grass repair). My question is two part: 1) Should I lay dirt such as potting soil or soil conditioner over the seeds to keep them in place and/or keep the birds out? And 2)Is it OK to plant seeds on a steep slope before a rain storm? Will the seeds wash away on the slope or on flat land?

Answer from NGA
April 6, 2010


I'd try to broadcast the seeds when there's no rain expected for at least a week. Otherwise they may very well be washed down and off the slope. Not so with a flat surface, but certainly on a slope. After broadcasting the seeds I'd cover over the top with a thin layer of peat moss or compost to both help keep the seeds moist while they are germinating and to keep birds from feasting on the seeds. If you keep the seed bed moist the seeds will germinate in 7-10 days and the roots will help hold it in place if rain arrives. I'm sure you've already contemplated how you will mow your lawn if it is on a steep slope. It might be a dangerous proposition, depending upon how steep the slope might be. You can mow crossways but I wouldn't recommend mowing up and down the slope! Best wishes with your new lawn.

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