How to Overseed a Lawn
All grass plants age, and after about 5 years, the grass plant's reproduction rates begin to slow and you will notice thinning in the lawn. This is an indicator that overseeding is needed to thicken up the turf and rejuvenate the lawn. Overseeding is recommended every 3 to 4 years, to keep your lawn thick and healthy so it can keep weeds out and maintain disease resistance.
Step 1 – Buy the best seed
Overseeding is recommended every 3 to 4 years, to keep your lawn thick and healthy so it can keep weeds out.
A great lawn can't be grown from less than great seeds, so be sure to buy a grass seed mixture or blend that contains only NTEP top rated varieties of grass seed. The price of grass seed is small compared to the time that will be invested in the lawn, so make your efforts worthwhile. Purchase only NTEP rated grass seed varieties that are specially bred for disease and drought resistance.
Step 2 – Rent or borrow a slit seeder
A slit seeder places small cuts into the soil and applies the grass seed at the same time. This is the best method to cover large areas since it assures good seed to soil contact.
Alternatively, you can use a drop or rotary type spreader to apply the seed based on the manufacturers recommendations. If the soil is compacted or the seed does not have good contact with the soil, you may need to repeat the overseeding.
Step 3 – Cover seeded areas with mulch and starter fertilizer
A protective mulch and starter fertilizer will help grass seed to remain moist and encourage germination. Do not use straw to cover newly seeded areas in your lawn, as most straw will also contain weed seeds which germinate along with the grass and compete for space in your lawn. Greenview's Grass Seed Accelerator is the best solution for mulch with a starter fertilizer for your seeded and overseeded lawn. To keep your lawn in top shape, follow up with an annual fertilization program which has been developed by agronomy experts. Check out the Greenview Annual Lawn Plan.