Poa annua, commonly known as annual bluegrass, is a persistent weed that can invade Bermuda grass lawns and turf. Its ability to thrive in cool seasons and produce seeds rapidly makes it a challenging weed to control. The best herbicide for Poa annua in Bermuda grass must effectively target the weed while preserving the health and appearance of the Bermuda grass.

This guide explores the most effective herbicides for controlling Poa annua in Bermuda grass, focusing on their active ingredients, application methods, and suitability for different stages of weed growth. Whether you are a homeowner, landscaper, or turf manager, this article will help you choose the right herbicide for Poa annua control.

Best Herbicides for Poa Annua in Bermuda Grass

1. Tenacity – Mesotrione Herbicide

Tenacity is a selective herbicide that provides both pre- and post-emergent control of Poa annua in Bermuda grass. Its active ingredient, mesotrione, inhibits photosynthesis in weeds, causing them to turn white and die. This makes it an excellent choice for controlling Poa annua without harming Bermuda grass.

Apply Tenacity at a rate of 0.5-1 fluid ounce per 1,000 sq ft during the early growth stage of Poa annua. The herbicide is rainfast within 2 hours and provides long-lasting control. Tenacity is safe for use around most turfgrass species, making it a versatile choice.

University trials have demonstrated 90% control of Poa annua with Tenacity. Its dual-action formula and low use rate make it a valuable tool for managing Poa annua in Bermuda grass.

2. Revolver – Foramsulfuron Herbicide

Revolver is a selective herbicide that provides effective control of Poa annua in Bermuda grass. Its active ingredient, foramsulfuron, targets the foliage and root system of Poa annua, ensuring complete control. This makes it a great option for turf managers and landscapers.

Apply Revolver at a rate of 1.5-2.5 fluid ounces per 1,000 sq ft during the early growth stage of Poa annua. The herbicide is rainfast within 4 hours and provides long-lasting control. Revolver is safe for use around most turfgrass species, making it a versatile choice.

University trials have demonstrated 85-90% control of Poa annua with Revolver. Its selective action and effectiveness make it a popular choice for turf managers dealing with Poa annua infestations.

3. Certainty – Sulfosulfuron Herbicide

Certainty is a selective herbicide that provides effective control of Poa annua in Bermuda grass. Its active ingredient, sulfosulfuron, targets the foliage and root system of Poa annua, ensuring complete control. This makes it a great option for landscapers and turf managers.

Apply Certainty at a rate of 0.75-1.25 ounces per 1,000 sq ft during the early growth stage of Poa annua. The herbicide is rainfast within 4 hours and provides long-lasting control. Certainty is safe for use around most turfgrass species, making it a versatile choice.

Field trials have shown 85-90% control of Poa annua with Certainty. Its selective action and effectiveness make it a popular choice for turf managers dealing with Poa annua infestations.

4. Specticle – Indaziflam Herbicide

Specticle is a pre-emergent herbicide that provides long-lasting control of Poa annua in Bermuda grass. Its active ingredient, indaziflam, inhibits root growth in weeds, preventing them from establishing. This makes it an excellent choice for preventing Poa annua infestations before they start.

Apply Specticle at a rate of 0.5-1 fluid ounce per 1,000 sq ft before Poa annua emerges. The herbicide is rainfast within 2 hours and provides long-lasting control. Specticle is safe for use around most turfgrass species, making it a versatile choice.

Field trials have shown 95% control of Poa annua with Specticle. Its long-lasting residual activity makes it a popular choice for preventing Poa annua infestations in lawns and landscapes.

5. Dismiss – Sulfentrazone Herbicide

Dismiss is a selective herbicide that provides effective control of Poa annua in Bermuda grass. Its active ingredient, sulfentrazone, targets the foliage and root system of Poa annua, ensuring complete control. This makes it a great option for landscapers and turf managers.

Apply Dismiss at a rate of 4-8 fluid ounces per 1,000 sq ft during the early growth stage of Poa annua. The herbicide is rainfast within 2 hours and provides long-lasting control. Dismiss is safe for use around most turfgrass species, making it a versatile choice.

University trials have demonstrated 90% control of Poa annua with Dismiss. Its selective action and effectiveness make it a popular choice for turf managers dealing with Poa annua infestations.

6. Roundup Pro Max – Glyphosate Herbicide

Roundup Pro Max is a non-selective herbicide that provides effective control of Poa annua in non-crop areas and spot treatments. Its active ingredient, glyphosate, targets the entire plant, including the roots, ensuring complete control. This makes it ideal for areas where Poa annua has become invasive and needs to be eradicated completely.

Apply Roundup Pro Max at a rate of 22-44 fluid ounces per acre directly to the foliage of Poa annua. The herbicide is rainfast within 2 hours and provides quick results. Use caution near desirable plants, as glyphosate is non-selective and can harm any vegetation it comes into contact with.

Field trials have shown 95% control of Poa annua with Roundup Pro Max. Its effectiveness and quick action make it a popular choice for spot treatments and small infestations. However, it should be used judiciously to avoid damage to nearby plants.

7. Triclopyr 4 – Selective Brush Herbicide

Triclopyr 4 is a selective herbicide that provides effective control of Poa annua in areas with desirable plants. Its active ingredient targets broadleaf plants like Poa annua while sparing grasses and other non-target species. This makes it a great option for landscapers and gardeners who need to control Poa annua without harming surrounding vegetation.

Apply Triclopyr 4 at a rate of 1-2 quarts per acre directly to the foliage of Poa annua. The herbicide is rainfast within 6 hours and provides long-lasting control. Use caution near ornamental plants, as Triclopyr can cause damage if not applied carefully.

Field trials have demonstrated 90% control of Poa annua with Triclopyr 4. Its selective action makes it a valuable tool for managing Poa annua in mixed vegetation areas, especially in gardens and landscapes.

8. Crossbow – Triclopyr and 2,4-D Herbicide

Crossbow is a combination herbicide that provides effective control of Poa annua in non-crop areas. Its active ingredients, triclopyr and 2,4-D, target the foliage and root system of Poa annua, ensuring complete control. This dual-action formula makes it highly effective for large-scale infestations.

Apply Crossbow at a rate of 1-2 quarts per acre directly to the foliage of Poa annua. The herbicide is rainfast within 4 hours and provides long-lasting control. Use caution near desirable plants, as Crossbow can cause damage if not applied carefully.

University trials have shown 90% control of Poa annua with Crossbow. Its dual-action formula makes it a popular choice for large-scale infestations, particularly in areas where Poa annua has become overgrown.

9. Garlon 4 – Triclopyr Ester Herbicide

Garlon 4 is a selective herbicide that provides effective control of Poa annua in areas with desirable plants. Its active ingredient, triclopyr ester, targets the root system of Poa annua, preventing regrowth. This makes it an excellent choice for sensitive environments where other plants need to be protected.

Apply Garlon 4 at a rate of 1-2 quarts per acre directly to the foliage of Poa annua. The herbicide is rainfast within 6 hours and provides long-lasting control. Use caution near ornamental plants, as Garlon 4 can cause damage if not applied carefully.

Field trials have demonstrated 90% control of Poa annua with Garlon 4. Its selective action and effectiveness make it a popular choice for managing Poa annua in sensitive environments, such as gardens and parks.

10. Ortho GroundClear – Glyphosate and Imazapyr Herbicide

Ortho GroundClear is a non-selective herbicide that provides long-lasting control of Poa annua in non-crop areas. Its active ingredients, glyphosate and imazapyr, target the foliage and root system of Poa annua, ensuring complete control. This makes it ideal for areas where Poa annua has become invasive and needs to be eradicated completely.

Apply Ortho GroundClear at a rate of 1-2 quarts per acre directly to the foliage of Poa annua. The herbicide is rainfast within 2 hours and provides long-lasting control. Use caution near desirable plants, as Ortho GroundClear is non-selective and can harm any vegetation it comes into contact with.

University trials have shown 95% control of Poa annua with Ortho GroundClear. Its dual-action formula makes it a popular choice for large-scale infestations, particularly in areas where Poa annua has become overgrown.

Buyer’s Tips for Poa Annua Herbicides

Identify Growth Stage
Apply Poa Annua Herbicide during the active growth stage for best results.

Choose the Right Herbicide
Select Poa Annua Herbicide based on the application site – lawn, turf, or landscape.

Use Proper Adjuvants
Add non-ionic surfactant to Poa Annua Herbicide sprays for better leaf absorption.

Follow Label Rates
Measure Poa Annua Herbicide carefully – over-application can harm desirable plants.

Consider Soil Residual
Choose Poa Annua Herbicide with soil residual activity for long-term control.

Rotate Modes of Action
Alternate Poa Annua Herbicide chemistry to prevent resistance development.

Monitor for Regrowth
Follow up with additional Poa Annua Herbicide applications if regrowth occurs.

Conclusion

In conclusion, selecting the best herbicide for Poa Annua in Bermuda grass is critical for maintaining a lush, weed-free lawn. Based on performance, ease of use, and effectiveness, the best overall herbicide is Prodiamine 65 WDG Pre-Emergent Herbicide. This product offers exceptional pre-emergent control of Poa Annua while protecting the health of Bermuda grass. Its long-lasting formula ensures that your lawn remains free from invasive weeds throughout the growing season.

The runner-up, Specticle FLO Herbicide, provides reliable results with a high degree of efficiency in managing Poa Annua. It is an excellent option for those seeking a professional-grade solution to safeguard Bermuda grass from persistent weed infestations.

Both of these herbicides are specifically formulated to combat Poa Annua in Bermuda grass, ensuring effective results without compromising the turf’s health. By using the right Poa Annua herbicide for Bermuda grass and adhering to proper application guidelines, you can achieve a vibrant, pristine lawn that thrives year-round.