How to Level a Bumpy Lawn

Ann Katelyn says May 6, 2020

Hey Carol, I am assuming you were meant to write nightcrawlers rather then crawfish. Nightcrawlers, also known as earthworms, are very beneficial to lawns and gardens, aerating the soil, recycling organic matter like compost and supplying plants, grass and trees with useful nutrients through their waste. They’re a sign of a healthy ecosystem and, as a result, we don’t recommend that you get rid of them.

However, if they are making your lawn very bumpy and unusable, then you can do a few things to help control them and repair your lawn:

Aerating the lawn in the spring and fall, followed by rolling it flat with a lawn roller will remove these bumps.

Fill any deeper depressions with top dressing, as explained above.

Create a mix of soap and water, pouring a few gallons of it onto the area where the nightcrawlers are concentrated. This will cause them to come up for air within a few minutes. You can then remove them to a flower bed or kill them.

You can also try flood areas of your lawn where the nightcrawlers are concentrated. They need air to breath, so they will come up out of the lawn if it gets waterlogged (that’s why you often see them during rainy weather). Exposure to the hot sun will then kill them.

If the problem is very severe, you can apply a granular grub insecticide over the lawn, applying 1.9 pounds evenly per 1000 square feet of lawn and watering it in. This should be a last resort, as it will kill all insect grubs in the lawn whether they are beneficial or not.

I hope you found these answers helpful, please let me know if I can be of more assistance.

Thanks Ann

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