Understanding Crabgrass

Crabgrass is an annual weed that thrives in thin, weak, or poorly maintained lawns. It germinates in the spring when soil temperatures reach about 55°F, grows aggressively in the summer, and then dies off in the fall, leaving behind thousands of seeds for the next season.

Best Ways to Get Rid of Crabgrass

1. Apply a Pre-Emergent Herbicide

The most effective way to control crabgrass is to stop it before it starts. Pre-emergent herbicides create a barrier in the soil that prevents crabgrass seeds from germinating. Apply the herbicide in early spring when soil temperatures reach 50-55°F—typically when forsythia bushes start blooming.

2. Pull Crabgrass by Hand

If crabgrass has already sprouted, manually pulling it out is an option, especially for small infestations. Be sure to remove the entire root system to prevent regrowth. Pull weeds when the soil is moist for easier removal.

3. Use Post-Emergent Herbicides

For more severe infestations, a post-emergent herbicide can help kill existing crabgrass. Look for a selective herbicide that targets crabgrass without harming your lawn. Apply on a warm, dry day and avoid mowing for a few days before and after application.

4. Mow at the Right Height

A thick, healthy lawn is the best defense against crabgrass. Mowing your grass at the right height (typically 3-4 inches for most lawns) helps shade the soil, preventing crabgrass seeds from germinating. Avoid cutting your lawn too short, as this creates the perfect conditions for weeds to thrive.

5. Water Deeply and Infrequently

Frequent, shallow watering promotes weak grass roots and encourages crabgrass growth. Instead, water deeply (about 1 inch per week) to strengthen your lawn’s root system and make it more resistant to weeds.

6. Overseed Thin Areas

Crabgrass thrives in bare or thin spots. In the fall, overseed your lawn to thicken the turf and crowd out potential weed growth. A dense lawn leaves no room for crabgrass to establish itself.

7. Improve Soil Health

Aerating your lawn and applying compost or organic fertilizer can help strengthen your grass and create conditions where crabgrass struggles to grow. Healthy soil leads to a healthier lawn.

Preventing Crabgrass Next Season

The key to long-term crabgrass control is consistent lawn care. Regular mowing, proper watering, and seasonal fertilization will help maintain thick, healthy turf that naturally resists weeds. Applying a pre-emergent herbicide each spring will also prevent new crabgrass from emerging.

Let the Pros Handle It!

If crabgrass has taken over your lawn, Bowman Property Services can help. We offer expert lawn care and weed control solutions to keep your yard lush, green, and crabgrass-free.

The professionals at Bowman Property Services are available to help you get rid of unsightly crabgrass. Call us at 773.747.6529 or schedule an estimate today.