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Proper Timing for Pre-Emergent Weed Control: Protect Your Lawn from Crabgrass, Goosegrass, and Broadleaf Weeds

As we head into the warmer months, now is the time to give your lawn the protection it needs to thrive throughout the season. One of the most effective ways to prevent common weeds like crabgrass, goosegrass, and broadleaf weeds is through a pre-emergent weed control treatment. At Beattie Outdoor Solutions, we understand that timing is everything when it comes to lawn care, and we’re here to help you get it right.

Why Pre-Emergent Weed Control Matters

Pre-emergent herbicides are designed to prevent weed seeds from germinating. When applied correctly, they create a protective barrier in the soil that stops weeds before they have the chance to sprout. This is essential for preventing the spread of invasive weeds like crabgrass, goosegrass, and broadleaf weeds (such as dandelions and clover), which can compete with your desirable turf and degrade the appearance and health of your lawn.

For optimal results, proper timing is key to ensuring your pre-emergent treatment is effective.

The Ideal Timing: Apply By February 15

In our region, the best time to apply pre-emergent herbicides for warm-season grasses is by February 15. While this may seem early, it’s the perfect window to target both grassy and broadleaf weeds. Here’s why:

• 1. Protect Against Crabgrass and Goosegrass: Crabgrass and goosegrass are two of the most troublesome weeds in warm-season grass lawns. These weeds germinate when the soil temperature rises to around 55°F to 60°F. By applying your pre-emergent herbicide by mid-February, you’re stopping these weeds from sprouting before they can take root and crowd out your grass.
• 2. Broadleaf Weed Protection: Pre-emergent herbicides don’t just stop grassy weeds; they also offer protection against broadleaf weeds like dandelions, clover, and henbit. These weeds often pop up in early spring, and applying a pre-emergent by February 15 helps keep them at bay, allowing your grass to grow without competition.
• 3. Maximize Weed Control for Warm-Season Grasses: Warm-season grasses, such as Bermuda, Zoysia, and Centipede, begin to wake up when soil temperatures start to rise. Applying a pre-emergent before they come out of dormancy ensures that your lawn has a strong barrier in place when weeds are starting to germinate.

Take It a Step Further: A Follow-Up Application in Late March or Early April

For even better control of weeds throughout the season, consider adding a follow-up application in late March or early April. While the initial pre-emergent application provides solid coverage, a second application can help reinforce your lawn's defense against late-germinating weeds.

Here’s why a follow-up application is beneficial:

• Extended Protection: A second round of pre-emergent ensures that you cover any late-germinating weeds that may have slipped past the first treatment. This is especially important for weeds that germinate in late spring.
• Stronger Weed Control: Some weeds, especially broadleaf varieties, may require additional protection to prevent them from taking hold. A follow-up application helps ensure a long-lasting, weed-free lawn.

Signs It’s Time to Apply Pre-Emergent

Although February 15 is the ideal date for your first pre-emergent application, it’s important to monitor your lawn and local weather conditions. Here are a few signs that it's time to get started:

• Consistent Temperatures Above 55°F: When soil temperatures rise consistently above 55°F, weed seeds begin to germinate. Apply your pre-emergent before this happens to prevent weeds from sprouting.
• Warm-Season Grass Awakening: If your Bermuda, Zoysia, or Centipede grass is showing signs of green growth, it’s time to apply pre-emergent. This is typically around late February to early March in our region.

Best Practices for Applying Pre-Emergent Weed Control

For the best results, follow these tips when applying your pre-emergent treatment:

• Water It In: Pre-emergents need moisture to activate. After applying your herbicide, water the lawn thoroughly to help the product settle into the soil and create an effective barrier.
• Follow Label Instructions: Always stick to the recommended application rates and methods for the specific product you’re using. Over-application can harm your lawn, while under-application may not provide sufficient protection.
• Avoid Disturbing the Soil: After applying a pre-emergent, avoid aerating or tilling the soil. Disturbing the soil can disrupt the herbicide layer and reduce its effectiveness.

What If You Miss the February 15 Window?

If you miss the ideal application window of February 15, don’t worry. While you may not have full protection against early germinating weeds, a pre-emergent can still help manage later-germinating weeds. The sooner you apply, the better the results. If weeds have already started to germinate, you may need to use post-emergent herbicides to control them.

Conclusion

Proper timing for pre-emergent weed control is essential to keeping your lawn healthy and beautiful. By applying your pre-emergent by February 15, you’ll protect against common weeds like crabgrass, goosegrass, and broadleaf weeds. To maximize control, consider a follow-up application in late March or early April. This two-step approach will give your lawn the best chance to stay weed-free all season long.

At Beattie Outdoor Solutions, we’re dedicated to helping you keep your lawn in top shape. If you have any questions or need assistance with your pre-emergent weed control, feel free to reach out. We’re here to help your lawn thrive!