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You may need to lay sod on the areas you dug up once you get the okay from the contractor. It will take about 30 to 45 days for the sod to take root. Consult a local sod installer to get an accurate estimate of the timeline of your specific yard-enhancement project.

While hydroseeding is designed for bare soil, it is possible to apply it over an existing lawn with certain adjustments. For the new seed to be successful, it needs good seed-to-soil contact to germinate and take root. Without proper preparation, most of the new seed will fail to establish and will die. To hydroseed over existing grass, first mow the lawn as low as possible, then loosen and clear any exposed soil. It is also recommended to use a finer mulch mixture in the hydroseed spray, which helps the seeds penetrate the existing turf and reach the soil without suffocating the established grass.

You can reseed a lawn that has dead grass, but it is best to remove the dead patches before you begin. Removing the dead turf and testing the soil will help you determine what is killing the grass so you can make the necessary amendments to prevent the problem from recurring. Once you have made the appropriate adjustments, you can rake, fertilize, and reseed. If your lawn has many large dead patches, it may be more effective to remove all the existing grass, amend the soil, and start over from scratch.

Whether you’re putting down fresh seed or reseeding, there are a few things to keep in mind when seeding your lawn. Be sure to choose the correct seed for your climate, seed at the right time of year, and water two to three times a day for the first week. Generally, Dudley recommends seeding in spring and fall as it is usually cooler and rainier.