To effectively kill crabgrass, you can use a combination of herbicides or natural methods. If you prefer a chemical approach, look for a pre-emergent herbicide containing ingredients like pendimethalin or prodiamine, which prevent crabgrass seeds from germinating. For existing crabgrass, a post-emergent herbicide with ingredients like quinclorac or fenoxaprop can be effective. Prices for these herbicides typically range from $15 to $30 per bottle, depending on the brand and quantity.
If you want a more natural solution, you can mix vinegar (with at least 10% acetic acid), salt, and dish soap. A common recipe is 1 part vinegar, 1 part salt, and a few drops of dish soap. Spray this mixture directly on the crabgrass on a sunny day, but be cautious as it can harm other plants as well.
Regardless of the method you choose, timing is crucial. Apply herbicides in early spring before crabgrass germinates or in late spring for existing plants. Always follow the manufacturer's instructions for application.
As a next step, consider getting 2–3 local quotes on Handyman.com for professional lawn care services if you want expert help with this issue.
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