- What is crabgrass?\u00a0<\/a><\/li>
- Method 1: Post-emergent herbicides\u00a0<\/a><\/li>
- Method 2: Manual removal\u00a0<\/a><\/li>
- Method 3: Natural and organic methods<\/a><\/li>
- Method 4: Smothering<\/a><\/li>
- Method 5: Solarization<\/a><\/li>
- Method 6: Innovative removal methods<\/a><\/li>
- Keep your lawn weed-free<\/a><\/li><\/ul> \t\t\t<\/div> \t\t<\/div><\/div>
What is crabgrass? <\/span><\/h2>
Crabgrass is a fast-growing summer weed that grows in hot, sunny weather. Its thick, rough stems spread low to the ground, rooting where they touch, resembling crab legs. Crabgrass<\/a> sprouts in spring, grows through summer, and dies with the first frost. You\u2019re most likely to see it in dry, compacted, or underwatered soil, especially if you scalp your lawn. <\/p>
Method 1: Post-emergent herbicides <\/span><\/h2>
![\"Ortho](\"https:\/\/lawnlove.com\/blog\/wp-content\/uploads\/2021\/09\/post-emergent-herbicide.jpg\")
Ortho Weed B Gone Herbicide. Photo Credit: Mike Mozart<\/a> \/ Flickr \/ CC BY 2.0<\/a><\/figcaption><\/figure> We list this first for a reason: Herbicides are the most effective method for getting rid of mature crabgrass.<\/p>
Post-emergent herbicides kill crabgrass after it sprouts and are most effective in warm, sunny weather, when the weed is actively growing. Early summer is also good; just avoid applying during extreme heat.<\/p>
There are two main types of post-emergent herbicides<\/a>:<\/p>
- Selective herbicides:<\/strong> These target crabgrass without harming your lawn.<\/li>
- Non-selective herbicides: <\/strong>These kill any plant they touch, including your grass. <\/li> <\/ul>
Herbicides come in liquid or granular forms. Liquid herbicides<\/strong> are mixed with water and applied to the crabgrass using a common lawn sprayer. Granular herbicides<\/strong> are applied with a spreader to damp grass so the pellets stick.<\/p>
Erin Hill, weed science diagnostician at the Michigan State University Extension, notes that one active ingredient stands out: \u201cFor residential users, there is one main herbicide active ingredient that is effective at controlling crabgrass, quinclorac.\u201d She adds that you\u2019ll find it in brands such as Roundup for Lawns, Ortho Weed B Gon plus Crabgrass Control, and Trimec Crabgrass plus Lawn Weed Killer, among others. <\/p>
Tips for applying:<\/strong><\/p>
- Don\u2019t apply during extreme heat (above 85 degrees):<\/strong> Hot temperatures can stress your lawn and reduce how well the herbicide works.<\/li>
- Keep your lawn dry after applying:<\/strong> Whether you\u2019re using a liquid or granular herbicide, avoid watering or rain for at least 24 hours to give the product time to absorb fully.<\/li>
- Hold off on mowing:<\/strong> Don\u2019t mow the lawn 1 or 2 days before and after applying. This gives the herbicide more leaf surface to stick to and increases its effectiveness.<\/li>
- Always read the label:<\/strong> Each product is different. Some are only safe for certain grass types, and others might need a second application. <\/li>
- For liquid herbicides:<\/strong> Mix carefully and follow the manufacturer\u2019s instructions.<\/li>
- For granular herbicides:<\/strong> Apply to wet grass so the granules stick to the weeds. <\/li> <\/ul>
For widespread crabgrass, use a broadcast treatment across the lawn. For smaller patches, spot treatment is best and minimizes chemical use. <\/p>
Read more: <\/strong>How to Apply Post-Emergent Herbicides<\/a><\/p>
Method 2: Manual removal <\/span><\/h2>
![\"Woman](\"https:\/\/lawnlove.com\/blog\/wp-content\/uploads\/2024\/05\/pulling-weed.jpeg\")
Hand-pulling weeds. Photo Credit: Khaligo<\/a> \/ Adobe Stock<\/figcaption><\/figure> It\u2019s certainly possible to remove crabgrass by hand, but it becomes increasingly difficult the longer you wait. As crabgrass matures, it develops multiple spreading stems that root at various points, creating a web-like network that’s nearly impossible to remove completely by hand. Missing even small root fragments often means the plant will regrow. <\/p>
By mid to late summer, established crabgrass forms thick mats that can cover several square feet, making complete removal extremely labor-intensive.<\/p>
So the key is to get it when it\u2019s young. Early in the season when crabgrass plants are small, hand pulling can be somewhat effective, especially if the soil is moist from rain or irrigation. The shallow root system of young crabgrass makes it easier to extract completely compared to deep-rooted weeds like dandelions.<\/p>
Best tools for manual removal:<\/p>
- Keep your lawn dry after applying:<\/strong> Whether you\u2019re using a liquid or granular herbicide, avoid watering or rain for at least 24 hours to give the product time to absorb fully.<\/li>
- Non-selective herbicides: <\/strong>These kill any plant they touch, including your grass. <\/li> <\/ul>
- Method 1: Post-emergent herbicides\u00a0<\/a><\/li>
![\"Corn](\"https:\/\/lawnlove.com\/blog\/wp-content\/uploads\/2023\/12\/7604800852_b0a2c2d9fa_o-2.jpg\")