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Hydroseeding over an existing lawn is possible, but certain adjustments are necessary since the process is for bare soil. Hydroseed mix is ​​usually very thick, which helps protect the seeds during germination. If you have existing grass on your site and still want to hydroseed, it's better to use a finer mulch mixture when spraying. A finer mulch mix means the seeds can root into existing soil without suffocating the existing grass.

While dethatching first often makes the aeration process faster and easier, both actions can be done on the same day. Aeration can also loosen up the thatch, even if you have a harder time aerating the soil because the thatch got too thick. Because both dethatching and aeration have the common goal of making it easier for the soil to get water and nutrients, it’s safe and possible to do both at the same time.

Yes, you can typically combine liquid aeration with other lawn treatments. However, follow the specific product's instructions and consider the compatibility of treatments. In most cases, liquid aeration can complement fertilization, overseeding, or weed control programs. Combining treatments strategically can address multiple aspects of your lawn's health and appearance simultaneously. Always read and adhere to the guidelines provided by the product manufacturers to ensure safe and effective application.

Yes, you should water the lawn after aerating. Now that you’ve loosened up the soil to better receive nutrients, it’s time to hydrate and fertilize your lawn. You’ll want to keep it evenly moist to promote healthy growth. Don’t drown your grass—too much of a good thing can reverse all the work you’ve done with aeration in the first place. But especially if you’ve overseeded and/or fertilized after aeration, you’ll want to ensure a moist soil layer to absorb those nutrients and fuel for new growth.