As spring approaches in Larchmont, NY, homeowners start thinking about how to keep their lawns lush, green, and weed-free. One of the most effective ways to ensure a healthy lawn is by applying pre-emergent crabgrass control at the right time. Crabgrass is a stubborn, invasive weed that thrives in warm weather, and once it takes hold, it can choke out healthy grass and ruin the look of your lawn.
At Andora Lawn Care, we know that timing is everything when it comes to pre-emergent herbicide application. Applying it too early can make it ineffective while applying it too late allows crabgrass to sprout and spread. So, when is the best time to apply pre-emergent crabgrass control, and how can you make sure your lawn stays healthy all season long?
Why Is Pre-Emergent Crabgrass Control Important?
Unlike post-emergent herbicides, which kill weeds after they appear, pre-emergent herbicides create a barrier in the soil that prevents crabgrass seeds from germinating. This means that applying pre-emergent at the right time can stop crabgrass before it even starts growing.
Key Benefits of Pre-Emergent Application:
- Prevents crabgrass from taking over your lawn
- Reduces the need for manual weeding or post-emergent herbicides
- Improves overall lawn health by allowing grass to grow without competition
- Saves time and money on future weed control efforts
Crabgrass is a warm-season weed, meaning it germinates when soil temperatures reach 55°F for several consecutive days. This typically happens in early to mid-spring, but the exact timing can vary depending on weather conditions in Larchmont, NY.
When Should You Apply Pre-Emergent Crabgrass Control?
Timing is crucial for effective crabgrass prevention. In Larchmont, NY, the ideal window for applying pre-emergent herbicide is typically between mid-March and mid-April. However, instead of relying solely on the calendar, the best way to determine the right time is by monitoring soil temperature.
Optimal Soil Temperature:
Apply pre-emergent when the soil temperature reaches 50-55°F at a depth of 2-4 inches.
How to Track Soil Temperature:
- Use a soil thermometer inserted into the ground in the morning
- Check local weather reports for soil temperature updates
- Look for early blooming flowers like forsythia, which often signal the right timing
If applied too early, the herbicide may break down before crabgrass starts germinating. If applied too late, crabgrass seeds will have already sprouted, making pre-emergent ineffective.
How to Apply Pre-Emergent Crabgrass Control
Applying pre-emergent herbicide correctly ensures maximum effectiveness. Follow these steps to get the best results:
Step 1: Choose the Right Pre-Emergent Herbicide
Not all pre-emergent herbicides are the same. Some are granular, while others are liquid applications. Granular products work well for homeowners using broadcast spreaders, while liquid options are better for large-scale applications.
Step 2: Apply Evenly Across the Lawn
- For granular herbicides: Use a broadcast or drop spreader to ensure even coverage.
- For liquid herbicides: Use a sprayer and apply in consistent patterns.
Step 3: Water the Lawn After Application
Most pre-emergent herbicides need to be watered in to activate. Lightly water your lawn within 24-48 hours after application unless rainfall is expected.
Common Mistakes to Avoid
- Applying Too Early or Too Late: Pre-emergent needs to be applied before crabgrass seeds germinate but not so early that it degrades before doing its job.
- Skipping Lawn Preparation: If your lawn is covered with leaves, debris, or excessive thatch, the herbicide may not reach the soil properly. Always rake and dethatch before application.
- Overseeding Immediately After Application: If you plan to plant new grass, avoid using pre-emergent herbicides in the same area. It will prevent new grass seeds from germinating along with crabgrass.
- Not Watering After Application: Without water, the herbicide won’t activate, making it ineffective.
What to Do After Applying Pre-Emergent?
Once your pre-emergent is applied, follow these lawn care tips to keep your grass healthy and strong:
- Mow at the right height – Keeping your lawn at 3-4 inches helps shade out crabgrass.
- Water deeply and infrequently – This promotes strong root growth.
- Fertilize as needed – Use a slow-release fertilizer after pre-emergent settles.
- Avoid heavy foot traffic – Newly treated areas should be left undisturbed for a few days.
Top Lawn Care Service Provider in Larchmont, NY
At Andora Lawn Care, we specialize in professional lawn care services in Larchmont, NY, ensuring your grass stays green, healthy, and weed-free all year long. Request an estimate or visit our website Andora Lawn Care. Protect Your Lawn from Crabgrass This Spring – Contact Andora Lawn Care Today!
