If you plan on doing this, make sure you use a starter â¦ The holes created by aerating your lawn allow good seed-to-soil contact. The first is from Early May, and the second is from yesterday after the mow. Fertilizing in the fall helps grass roots grow stronger and absorb as many nutrients as they possibly can to make it through the winter. For example, whatâs the best time of the year to do it? Cutting your lawn short buys you some time before your next cut. After Aeration and Dethatching. To keep your lawn in perfect shape and take full advantage of aeration, be patient. Recommended: Mow your lawn lower than usual at 1-1/2â³ and clean up leaves. Mixing grass seed with Milorganite is an effective way to spread seed accurately. There is a chance for rain on fri, sat, sun, and monday. Here are some pics of the front. One of my customers wants me to over seed this week. After the new grass has germinated and is now 3-4 inches tall, now mow â¦ Mow Your Lawn First. This will allow the core aerator to dig into the soil better and pull out deeper cores. After not knowing much about lawn care, and feeling like I failed with all the grubs issues this was SUPER encouraging for me. This way, you will have given the new grass time to acclimate and set roots. Before you start mowing, it is ideal that you stop watering the seed about twenty-four hours prior in order to allow the grass to dry out a bit. Overseeding a lawn is often combined with lawn aeration, and for good reason. That way, theyâll be ready to spring up after the frost. By following these steps, the lawn will quickly return to full vibrancy. The seed, fertilizer, and water will have the best chance to get down into the holes made by the aerator if applied soon after aeration. After aerating and overseeding, give your lawn 2-4 weeks before mowing. For best results, use high-quality seed and fertilize with Milorganite®. Image source Nuleaflawncare.com. A newly aerated and dethatched lawn can look in a poor state. Before core aerating and overseeding make sure you mow your lawn short. When you aerate your lawn it is the perfect time to overseed it as there will be holes all â¦ Mowing low makes both aeration and seeding more effective. After aeration and seeding, youâll want to follow up with fertilizing your lawn. This aids seed germination. We recommend you set the mowing height to 1-1/2â³ (one-and-one-half inches). If you have gone to the trouble of aerating your lawn you really should take full advantage of the situation and I feel adding fresh grass seed to your lawn is a good idea after aeration. When the lawn grows to be about four inches in height, it is time to cut the grass. Immediately after aeration, your lawn is ripe for overseeding and fertilizing. I know my yard still has a ways to go, but I finally feel like I'm moving forward. This will get the lawn low enough without scalping it. Aerating creates holes in the grass and soil through which water, oxygen, and vital nutrients can reach the new grass seed and the roots of the existing grass. However, do not worry. Try to mow one or two days before we arrive â and make it lower than usual. The holes provide excellent soil exposure for seeds and deliver fertilizer directly to the roots of your grass. Overseeding after aeration can return your lawn to a healthy state. I know it makes more sense to do it in the fall, but he wants it done now. Many people struggle to properly judge when to cut grass after aeration and seeding. Also, if overseeding then you will have to skip several weeks of mowing as your new seed germinates. While the process of overseeding your lawn may seem simple, there is actually a fair amount of science to it. Within 48 hours after you aerate you should over seed, fertilize, and water your lawn.