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Weed Control

Identify and eliminate lawn weeds with proven strategies for crabgrass, spurge, and more.

22 articlesfall season

Weeds are the number one frustration for homeowners striving for a clean, healthy lawn. They compete with your grass for sunlight, water, and nutrients, and left unchecked, they can take over entire sections of your yard in a single season. Effective weed control requires a two-pronged approach: prevention and targeted elimination.

Pre-emergent herbicides are your first line of defense, creating a chemical barrier that prevents weed seeds from germinating. Timing is critical -- apply too early and the barrier degrades before peak germination; too late and the weeds are already growing. Our guides cover the exact soil temperature windows for crabgrass, spurge, and other common invaders so you can time your applications perfectly.

For weeds that have already established, post-emergent herbicides provide targeted control. Knowing whether you're dealing with broadleaf weeds like dandelions or grassy weeds like crabgrass determines which product to use. We also cover organic and natural weed control methods for homeowners who prefer chemical-free approaches, including corn gluten meal, vinegar-based solutions, and manual removal techniques that actually work.

Featured Guide

Lawn treatment technician pulling a spray hose from a tank truck toward a green suburban front lawn
Featuredfall8 min read

TruGreen Cost in 2026: Plans, Pricing & Is It Worth It

TruGreen costs about $400–$900 per year for most lawns, or $50–$100 per visit. See 2026 plan pricing, what's included, and how it compares to DIY and local pros.

Key Stat: TruGreen's annual lawn plans run $450–$2,000 depending on lawn size and plan tier, while a comparable DIY fertilization and weed control program typically costs $150–$400 per year in products.

4 FAQs answered

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Frequently Asked Questions

Common questions about weed control, answered by our expert guides.

What is the most effective broadleaf weed killer for home lawns?

Three-way herbicide mixes containing 2,4-D, MCPP, and dicamba provide the broadest control of common broadleaf weeds like dandelions, clover, and plantain. These are available in both liquid and granular forms at most garden centers.

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Is it safe to use broadleaf weed killer on St. Augustine grass?

Many standard broadleaf herbicides containing high rates of 2,4-D or dicamba can damage St. Augustine and centipede grass. Always check the product label for your specific grass type before applying, and look for formulas specifically approved for sensitive grass species.

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When is the best time to apply broadleaf weed killer?

Fall (September–October) is the most effective window because weeds draw the herbicide down into their roots as they prepare for winter dormancy. Spring applications also work well on young, actively growing weeds. Avoid applying in temperatures above 85°F.

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How long after applying broadleaf herbicide can I reseed my lawn?

Most broadleaf herbicides require a waiting period of 3–4 weeks before overseeding. Check your specific product label, as timing varies by active ingredient. Conversely, avoid applying herbicide to newly seeded areas until the grass has been mowed at least three times.

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Is 2,4-D banned in the United States?

No, 2,4-D is not banned at the federal level and remains EPA-registered for residential use. However, some states and municipalities have restrictions on when, where, and how it can be applied.

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