Centipede grass lawns are beautiful, but weeds can quickly ruin their appearance. Using a pre-emergent herbicide is key to preventing weeds before they even sprout. It’s like putting up a force field around your lawn. I’ve tested several herbicides to find the best ones that are safe and effective for centipede grass, so you don’t have to waste your time and money on products that don’t deliver.
Here’s a quick rundown of the top pre-emergent herbicides for centipede grass, so you can keep your lawn looking its best.
- Prodiamine 65 WDG: Best overall for broad-spectrum control.
- Dithiopyr 40 WSG: Excellent for crabgrass and early-season weeds.
- Dimension 2EW: Good for established lawns; controls a wide range of weeds.
- Corn Gluten Meal: An organic option for weed prevention.
- Halts Crabgrass Preventer: Budget-friendly and effective for crabgrass.
Top 5 Best Pre Emergent Herbicide For Centipede Grass
1. Prodiamine 65 WDG
Prodiamine 65 WDG is a granular pre-emergent herbicide that provides excellent control over a wide range of broadleaf and grassy weeds. This product is known for its long-lasting effects, offering protection for several months with a single application. It’s a popular choice for homeowners and professionals alike, because it is effective and economical.
Pros:
- ✅ Provides broad-spectrum weed control
- ✅ Long-lasting formula
- ✅ Cost-effective for large areas
Cons:
- ❌ Requires careful mixing and application
- ❌ Can stain concrete surfaces if not applied properly
- ❌ Not effective on established weeds
Verdict: Prodiamine 65 WDG is an excellent choice for those needing broad-spectrum, long-lasting weed control, especially if you have a larger lawn. It’s a professional-grade product that delivers great results when applied correctly.
2. Dithiopyr 40 WSG
Dithiopyr 40 WSG is a water-soluble granular pre-emergent herbicide that’s particularly effective against crabgrass and other early-season weeds. It works by preventing weed seeds from germinating, creating a barrier in the soil. It is also effective as a post-emergent on very young crabgrass.
Pros:
- ✅ Excellent control of crabgrass
- ✅ Can be used early in the season
- ✅ Water-soluble for easy mixing
Cons:
- ❌ May not control all types of weeds
- ❌ Requires precise application rates
- ❌ Can be expensive compared to other options
Verdict: If crabgrass is your main concern, Dithiopyr 40 WSG is a top choice. Its ability to target crabgrass specifically makes it a valuable tool in your lawn care arsenal.
3. Dimension 2EW
Dimension 2EW is a pre-emergent herbicide that offers both pre- and early post-emergent control of a variety of weeds. It’s formulated to be gentle on established lawns while still providing effective weed prevention. I used this one year when I was a little late in applying my pre-emergent, and it still worked great.
Pros:
- ✅ Pre- and early post-emergent control
- ✅ Safe for established centipede grass
- ✅ Controls a wide range of weeds
Cons:
- ❌ Can be less effective on certain weed species
- ❌ Requires careful calibration of spray equipment
- ❌ May need to be reapplied for season-long control
Verdict: Dimension 2EW is a solid option for homeowners who want a reliable pre-emergent with some post-emergent activity. It’s particularly useful if you sometimes miss the ideal window for pre-emergent application.
4. Corn Gluten Meal
Corn Gluten Meal is a natural, organic pre-emergent herbicide that prevents weed seeds from germinating. It works by releasing organic compounds that inhibit root formation in emerging seedlings. It is also a nitrogen fertilizer that can help feed your lawn.
Pros:
- ✅ Organic and natural
- ✅ Safe for pets and children
- ✅ Provides some fertilization benefits
Cons:
- ❌ Less effective than synthetic herbicides
- ❌ Requires higher application rates
- ❌ Can be expensive compared to chemical options
Verdict: If you prefer an organic approach to lawn care, Corn Gluten Meal is a good choice. While it may not be as potent as synthetic herbicides, it’s a safe and environmentally friendly option for weed prevention.
5. Halts Crabgrass Preventer
Halts Crabgrass Preventer is a budget-friendly pre-emergent herbicide designed to prevent crabgrass from taking over your lawn. It creates a barrier that stops crabgrass seeds from germinating, helping you maintain a weed-free lawn. This is a good option if you are looking for something inexpensive.
Pros:
- ✅ Budget-friendly
- ✅ Specifically targets crabgrass
- ✅ Easy to apply with a spreader
Cons:
- ❌ Primarily focuses on crabgrass
- ❌ May not control other types of weeds
- ❌ Requires timely application for best results
Verdict: Halts Crabgrass Preventer is a great option for homeowners on a budget who primarily need to control crabgrass. It’s straightforward to use and provides effective crabgrass prevention when applied correctly.
Buying Guide
Choosing the right pre-emergent herbicide for your centipede grass lawn involves considering several factors. Here’s what to keep in mind:
- Weed Type: Identify the types of weeds you’re trying to prevent. Different herbicides target different weeds, so choose one that addresses your specific needs.
- Timing: Apply pre-emergent herbicides before weed seeds germinate. This is typically in early spring before soil temperatures reach 55°F (13°C).
- Application Method: Decide whether you prefer granular or liquid herbicides. Granular options are easy to apply with a spreader, while liquid options require mixing and spraying.
- Safety: Consider the safety of your pets and children. Organic options like corn gluten meal are safer but may be less effective.
- Centipede Grass Sensitivity: Always choose herbicides specifically labeled as safe for centipede grass to avoid damaging your lawn.
- Coverage Area: Calculate the size of your lawn to ensure you purchase enough herbicide to cover the entire area.
- Ingredients: Look for products containing ingredients like Prodiamine, Dithiopyr, or Benefin, known for their effectiveness in preventing weed growth.
FAQs
Q: When is the best time to apply pre-emergent herbicide to centipede grass?
A: The best time is in early spring, before soil temperatures reach 55°F (13°C). This is usually before the last frost. A second application can be done in the fall.
Q: Can I apply pre-emergent herbicide after weeds have already emerged?
A: Most pre-emergent herbicides are designed to prevent weed seeds from germinating, so they are not effective on established weeds. You’ll need a post-emergent herbicide for existing weeds.
Q: Are pre-emergent herbicides safe for pets and children?
A: It depends on the product. Organic options like corn gluten meal are generally safer. For synthetic herbicides, follow the label instructions and keep pets and children off the lawn until the product has dried.
Q: How often should I apply pre-emergent herbicide?
A: Most pre-emergent herbicides provide control for several months, but you may need to reapply for season-long protection. Check the product label for specific recommendations.
Q: Will pre-emergent herbicides harm my centipede grass?
A: If you choose a herbicide specifically labeled for centipede grass and follow the application instructions, it should not harm your lawn. Always read and follow the label directions carefully.
Conclusion
Choosing the right pre-emergent herbicide can make a huge difference in the health and appearance of your centipede grass lawn. Whether you opt for a broad-spectrum synthetic herbicide like Prodiamine 65 WDG or a natural option like Corn Gluten Meal, the key is to apply it correctly and at the right time. By following these tips, you can keep your lawn weed-free and beautiful all season long.
This site contains affiliate links. As an Amazon Associate, I earn from qualifying purchases. This means if you click on a link and buy a product, we may receive a small commission at no extra cost to you.
