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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.

Break up hard dirt in your yard with popular methods such as core aeration or manual aeration with a spade, mini excavator, or pitchfork. You can also alter your soil to keep it from compacting in the future. Adding compost, groundcover plants, or aeration granules—preferably made of organic materials—can also soften your ground and encourage water saturation.

Moss growing in a lawn is a sign of poor soil that makes it hard for grass and plants to grow. Moss thrives in these conditions and spreads easily, so it can quickly take over your yard if it’s lacking in nutrients, too wet, or has an excessive amount of shade. Moss in the lawn isn’t always a bad thing, but it can prevent turfgrass from forming deep roots.

Both aerating and scarifying your lawn can offer serious benefits. Aerating pokes holes in the soil to better allow air, moisture, and nutrients to permeate while scarifying removes the buildup of dead plant matter at the soil’s surface. Most lawns require both of these maintenance items to thrive.