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*The Angi rating for Weed Maintenance companies in O Fallon, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Weed Maintenance needs.

*The HomeAdvisor rating for Weed Maintenance companies in O Fallon, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Weed Maintenance needs.

Last update on May 23, 2026

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Weed Services questions, answered by experts

Too much clover in your lawn can indicate several issues with your soil. Clover can thrive in soils with abnormally high pH, low-cut grass, and low nitrogen. Amending these issues can push clover out for good.

Hardy perennial clover loves the low nitrogen and compact conditions that often come with poor, infertile soils. But other factors also contribute to a clover explosion, including drought conditions, cool temperatures, under fertilization, and over-irrigation. You’ll need to evaluate all these elements when planning to kill off the clover.

Poison oak is similar to poison ivy in that it's in the same family of plants. Poison oak is identifiable by its rounded-off leaves and hairy leaf texture. Tree-climbing varieties live primarily in western states while low-growing poison oak bushes occupy the eastern states. Treat poison oak like poison ivy to get rid of it permanently.

No, it's not really possible to completely prevent weed growth. Weeds are incredibly resilient—all they usually need is a tiny bit of dirt to sprout, so their eventual appearance is pretty much inevitable. However, you can definitely keep them at bay by getting rid of weeds as soon as you notice them. The longer you let them sit and grow roots, the more they'll spread.

All herbicides come with risks, but you can control and mitigate risks by discussing your options with your weed service company before application. Some companies use milder or sustainable herbicides more times per season to control weeds rather than one to two herbicide sprayings annually. You can also ask your professional about pet-friendly and kid-friendly services. In most cases, though, you can wait a few days after the application for the herbicides to soak into the ground, at that point they shouldn’t pose a risk to you or your family.

The safest method to avoid killing your turf grass is hand pulling Johnsongrass. You can also apply vinegar for a safer herbicide, but it will still burn your lawn if it gets on it.

The O Fallon, IL homeowners’ guide to weed maintenance services

From average costs to expert advice, get all the answers you need to get your job done.

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