If your lawn is thin and patchy, or if you're just looking for year round green and want to put a cool season grass in for the months when your warm season grass is dormant, or vice versa, overseeding is the technique of choice.
Lawn overseeding can help you take your lawn from so so to sensational, but just throwing some seed on your old turf won't get you the great lawn you're going for. Follow these tips to make sure you do overseeding right.
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Tip #1 - Time it Right
If you're overseeding with a cool season grass, do it in the fall, the peak growing time for cool season grasses. For warm season grasses, think spring.
Tip #2 - Prep your Soil
You need to give the new seeds the most hospitable home possible. Remove thatch, and consider aerating your lawn. Loosen the soil with a strong raking as well. This is also a great time to test your soil and amend your soil, whether it's upping its phosphorous levels or adjusting its ph.
For lawn overseeding to succeed, you need a lot of seeds. You should plan to double the seeding you would do if you were putting the seeds down on straight soil with no existing turf.
Tip #5 - Baby Your Lawn
Even though you have existing turf, your new sprouts are just as delicate as a completely new lawn, so treat your yard accordingly. Put a protective mulch down, fertilize, water, water, water, and stay off the grass for a few weeks.
About the Author
Dawn West B.A. holds a B.A. in English from Harvard University and teaches writing at Oregon State University.
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