How to Regrow Grass in Damaged Sod
Re-growing grass from damaged sod requires a concentrated and diligent effort to rejuvenate the soil. You can plant new grass over the damaged areas but will likely not reap the desired growth without addressing the deficiencies of a neglected or worn soil bed. In order to revamp the soil to foster stronger growth, take these steps to totally replenish the soil and create the foundation for a healthy and lush new lawn.
Start by raking the leaves and dead grass away from the lawn with a garden rake. Rake vigorously to reach deep into the top layer of soil and remove as much of the thatch as possible. Gather all of the objects you collect and bag them for disposal of use as compost.
Use a dethatching rake to address the thatch more effectively. Thatch is the collection of stems, grass clippings and roots that gather below the surface of the grass. This collection creates a spongy layer that soaks up water and prevents it from reaching deeper into the soil. If the water is stopped from reaching deep into the soil, the root hairs of the deeper roots will starve and the grass blades will be weaker and less resilient to foot traffic and the effects of the sun.
Use a plug aerator to aerate the soil. Spike aerators work to punch holes into the soil with the intention of allowing water to reach deeper into the soil. Plug aerators actually remove plugs of soil. Removing the plugs will not only create the pathways for water to seep deeper into the soil, they will allow the soil to expand and accept more water. The water moisturizes the soil and seeds and delivers the much-needed nutrients to the grass roots.
Use a seed spreader to deliver the new grass seeds. A spreader will enable you to lay the seeds in a uniformed way and keep the rate of seed spreading nearer to the optimum 15-25 seeds per square inch better than spreading by hand. Use appropriate sees for your climate for best grass growth results.
Rake the newly seeded lawn lightly to work the seeds into the soil. Grass seeds grow best when the seeds are allowed to grow from direct contact with water and soil. Add top soil to ensure well entrenched seed layering.
Water the new seeds liberally for the first 3 weeks. After the new seeds begin to sprout from the soil, reduce watering to normal amounts – depending on the time of year and the amount of sun the lawn receives. Mow the lawn to keep the grass at 2-inches or shorter for the first 3 to 4 weeks. During the summer, longer grass will allow the blades to shade the soil so that the water is not evaporated before it has the chance to soak into the soil.