Crabgrass is a persistent and invasive weed that can quickly take over lawns and gardens if not properly managed. It thrives in warm conditions, typically germinating in early spring and spreading rapidly throughout the summer. However, with the right preventative measures and control techniques, you can keep crabgrass at bay and maintain a lush, healthy lawn.
Prevention is Key
The best way to control crabgrass is to prevent it from establishing in the first place. Here are some effective prevention strategies:
- Apply a Pre-Emergent Herbicide: A pre-emergent herbicide should be applied in early spring before soil temperatures reach 55°F, as this is when crabgrass seeds begin to germinate.
- Maintain a Thick, Healthy Lawn: A dense lawn shades the soil and prevents crabgrass seeds from receiving the sunlight they need to sprout. Regular fertilization, proper mowing, and adequate watering will promote healthy grass growth.
- Mow at the Right Height: Keeping your lawn at a height of about 3-4″ inches discourages crabgrass by reducing sunlight exposure at the soil level. We let grass grow up to 4” when it’s hot and dry to reduce stress on the turf.
Post-Emergent Control
If crabgrass has already emerged, there are still ways to manage it:
- Hand Pulling: Small patches of crabgrass can be removed manually before they go to seed.
- Use a Post-Emergent Herbicide: Selective herbicides targeting crabgrass can be applied to actively growing weeds. Be sure to choose a product safe for your type of grass.
By staying proactive and using a combination of prevention and control techniques, you can effectively manage crabgrass and enjoy a healthier, weed-free lawn throughout the year.
