What is how to get rid of crabgrass?

Crabgrass is a common lawn weed that thrives in thin or bare spots, especially during hot weather. Getting rid of it requires a multi-pronged approach focusing on prevention and control.

Prevention:

  • Maintain a Healthy Lawn: A dense, healthy lawn is the best defense against crabgrass.
    • Proper Mowing: Mow at the correct height for your grass type. Taller grass shades the soil, preventing crabgrass seeds from germinating. Avoid scalping the lawn.
    • Fertilization: Fertilize your lawn appropriately to promote healthy growth. Perform a soil test to determine your lawn's nutrient needs. Refer to your local university extension or lawn care professionals for guidance on the correct fertilizer%20selection.
    • Watering: Water deeply and infrequently to encourage deep root growth. Shallow, frequent watering promotes shallow root growth, making your lawn more susceptible to crabgrass and drought.
    • Overseeding: Overseed thin or bare spots in the fall to thicken your lawn and prevent crabgrass from taking hold in the spring. Choose a grass type that is well-suited to your climate and soil conditions.

Control:

  • Pre-Emergent Herbicides: Apply a pre-emergent herbicide in the spring before crabgrass seeds germinate. This prevents crabgrass seeds from sprouting. Timing is crucial; typically, application should occur when soil temperatures reach around 55°F (13°C) for several consecutive days. Follow the product label instructions carefully. Pre-emergent%20herbicides are effective but might also impact desirable grass seed germination if you are planning to overseed in the spring.

  • Post-Emergent Herbicides: Use a post-emergent herbicide to kill crabgrass that has already sprouted. These herbicides are most effective when crabgrass is young and actively growing. Again, follow the product label instructions carefully. Choose a product specifically formulated for crabgrass control and safe for your type of lawn grass. Be aware that some post-emergent herbicides may also harm desirable grasses, so selective application is essential. Consider spot treating individual clumps of crabgrass. Understand the different types of post-emergent%20herbicides available and choose wisely.

  • Manual Removal: For small infestations, you can manually pull crabgrass plants. Be sure to remove the entire plant, including the roots, to prevent it from growing back. This is most effective after a rain when the soil is soft.

  • Solarization: Cover the affected area with clear plastic sheeting during the hottest part of the summer for several weeks to kill crabgrass seeds and plants. This method is suitable for areas where you plan to re-seed or re-sod.

Important Considerations:

  • Identify Crabgrass: Make sure you correctly identify crabgrass before applying any herbicide. Some other grass-like weeds can be mistaken for crabgrass.
  • Read and Follow Label Instructions: Always read and follow the label instructions on any herbicide product. This will help ensure that you use the product safely and effectively.
  • Environmental Impact: Consider the environmental impact of herbicides before using them. Look for products with low toxicity and use them sparingly. Consider organic or natural alternatives when possible.
  • Professional Help: If you are struggling to control crabgrass, consider consulting with a lawn care professional. They can help you identify the best treatment options for your lawn and provide expert advice.