How to Kill Crabgrass in Summer: A Comprehensive Guide
Crabgrass is one of the most common and pesky weeds that can take over your lawn, especially during the summer months. It's an annual grassy weed that can spread quickly, outcompeting your desired grass species for water, nutrients, and sunlight. If you're tired of dealing with crabgrass, you're in luck. We've put together a comprehensive guide on how to kill crabgrass in summer, so you can enjoy a lush, weed-free lawn.
Preventing Crabgrass in Summer
Before we dive into how to kill crabgrass, it's essential to understand how to prevent it from growing in the first place. Crabgrass thrives in warm weather, so it's crucial to take preventative measures during the summer months. Here are some tips to help you prevent crabgrass:
- Proper Mowing and Maintenance: Maintain your lawn at a height of 2.5-3 inches to prevent crabgrass from germinating. Keep your mower blade sharp, and avoid mowing over the same spot multiple times, as this can spread crabgrass seeds.
- Proper Watering: Crabgrass loves moisture, so avoid overwatering your lawn. Water your lawn deeply but infrequently to encourage deep root growth and prevent shallow watering, which can lead to crabgrass growth.
- Fertilize with a Pre-Emergent Herbicide: Apply a pre-emergent herbicide in early spring to prevent crabgrass seeds from germinating. These products create a barrier on the soil surface that prevents seeds from sprouting.
- Use a Crabgrass-Resistant Turfgrass: If you're looking to establish a new lawn, consider using a turfgrass species that's resistant to crabgrass.
Herbicides to Kill Crabgrass in Summer
While preventative measures are essential, sometimes crabgrass has already taken over your lawn. Don't worry; we've got you covered. Here are some effective herbicides to kill crabgrass in summer:

**Post-Emergent Herbicides**: These herbicides kill existing crabgrass plants, preventing them from producing seeds and spreading to other areas of your lawn. Some popular post-emergent herbicides include:
- Suscon Crabgrass Herbicide
- Talisman Crabgrass Herbicide
- Drive XLR8 Herbicide
**Selective Herbicides**: These herbicides target specific weeds, including crabgrass. Some popular selective herbicides include:
- 2,4-D Amine Herbicide
- Dicamba Herbicide
- Meipquat Chloride Herbicide
Natural Methods to Kill Crabgrass in Summer
If you're looking for a more natural approach to killing crabgrass, here are some effective methods:

**Boiling Water**: Pour boiling water directly on crabgrass plants to scald them and prevent regrowth. Be careful not to scald yourself or damage surrounding plants.
**Vinegar Solution**: Mix equal parts white vinegar and water in a spray bottle. Spray directly on crabgrass plants, taking care not to spray nearby plants. The acidity in the vinegar will kill crabgrass plants.
**Solarization**: Trapping the sun's heat under a clear plastic tarp or sheeting can kill crabgrass plants. Apply the tarp in the summer when the sun is at its strongest, weighing it down with rocks or soil to prevent wind from lifting it.
Additional Tips to Kill Crabgrass in Summer
Here are some additional tips to help you kill crabgrass in summer:
**Timing is Everything**: Crabgrass grows best in warm weather, typically between 60°F and 95°F. Apply herbicides or use natural methods when the temperature is within this range for optimal effectiveness.
**Remove Weeds by Hand**: Regularly removing crabgrass weeds by hand can help prevent them from spreading and reduce the need for herbicides.
**Maintain a Healthy Lawn**: A healthy, well-maintained lawn is more resistant to crabgrass invasion. Regularly mow, water, and fertilize your lawn to keep it looking its best.