Autumn Olive is a fast-growing, invasive shrub that can quickly take over landscapes, outcompeting native plants. The best herbicide for Autumn Olive helps manage and control this invasive species, ensuring your yard remains healthy and beautiful.

This guide reviews the top-performing herbicides for Autumn Olive. These products target the shrub effectively, preventing its spread and promoting the growth of native plants.

Best Herbicides for Autumn Olive

1. Roundup Ready-To-Use Weed & Grass Killer III

Roundup Ready-To-Use is a non-selective herbicide effective against Autumn Olive. Its systemic formula penetrates to the roots, ensuring complete plant elimination.

It works fast, offering visible results within hours, and is rainproof in just 1 hour. This herbicide is ideal for use on unwanted shrubs in non-lawn areas.

Be cautious not to apply on desirable plants, as it will kill all vegetation it touches.

2. Triclopyr Herbicide

Triclopyr is a selective herbicide that targets woody plants, including Autumn Olive. This product is available in both liquid and gel forms for easy application.

It works by disrupting the plant’s cellular functions, effectively killing the shrub. It’s most effective when applied during the active growing season.

Apply directly to the leaves or cut stumps to prevent regrowth and spread.

3. Garlon 4

Garlon 4 is a powerful herbicide for woody plants, including Autumn Olive. Its active ingredient, triclopyr, works to control growth and kill the shrub.

This herbicide is effective on both cut stumps and foliar applications. It’s ideal for large areas with dense infestations.

For optimal results, apply when the plant is actively growing, and use it with a non-ionic surfactant for enhanced absorption.

4. Crossbow Herbicide

Crossbow Herbicide is another effective option for controlling Autumn Olive. This herbicide combines triclopyr and 2,4-D to kill both woody and broadleaf plants.

Its dual-action formula ensures thorough control by targeting both the roots and the leaves. It’s best used in the growing season for maximum effectiveness.

Apply it to the foliage or as a cut-stump treatment to stop regrowth.

5. Cimarron Plus Herbicide

Cimarron Plus is a herbicide that controls a wide range of invasive species, including Autumn Olive. It combines two powerful ingredients, metsulfuron methyl and chlorsulfuron, to kill woody plants.

This product is highly effective when applied to the foliage, and it works best in the early spring or fall.

Apply using a sprayer for even coverage, and avoid applying before rain.

6. Tordon RTU

Tordon RTU is a ready-to-use herbicide specifically designed for woody plant control. It’s effective against Autumn Olive by inhibiting root growth.

This herbicide is ideal for cutting or treating stumps. It’s rainproof within 24 hours and highly effective at preventing regrowth.

Apply directly to the cut stump to prevent sprouting, ensuring long-term control.

7. Krenite S Herbicide

Krenite S is a non-residual herbicide that effectively controls Autumn Olive and other woody plants. It is safe to use around desirable vegetation when applied carefully.

This product works by inhibiting plant cell division, which prevents new growth. It’s ideal for treating dense infestations and is rainfast in 4 hours.

Apply during active growth for the best results, and always follow label instructions for safe use.

8. Plexx Herbicide

Plexx Herbicide offers both pre- and post-emergent control, making it a versatile solution for Autumn Olive. Its active ingredient, pyroxasulfone, targets emerging seeds as well as established plants.

It’s effective for large areas and provides long-lasting control. Apply it during the growing season for the best effect on Autumn Olive infestations.

Use a sprayer for even application, and avoid excessive runoff.

9. Milestone Herbicide

Milestone is a selective herbicide designed for invasive plant control, including Autumn Olive. Its active ingredient, aminopyralid, works by disrupting the plant’s growth process.

Milestone is effective on both foliage and woody stems, and it works best when applied during the active growing season.

Apply in a targeted manner to avoid harming desirable plants and ensure optimal control.

10. Escort XP Herbicide

Escort XP is a post-emergent herbicide that controls Autumn Olive and other woody plants. It is highly effective against perennial weeds and can be applied to both foliage and the soil.

Use it during active growth to ensure full control. Apply with a sprayer and follow recommended dosages for optimal results.

Escort XP offers excellent control over stubborn weeds, but always use with caution around non-target plants.

Tips Buyers Guide for the Best Herbicide for Autumn Olive

• Choose the Right Herbicide — Select an herbicide that targets woody plants like Autumn Olive. Look for products specifically formulated for invasive shrubs.
• Consider Application Method — Whether using foliar sprays or stump treatments, choose an herbicide with the right application method for your situation.
• Best Time for Application — Apply herbicides during the plant’s active growing season for maximum effect.
• Check for Rainfastness — Ensure your chosen herbicide is rainfast within a few hours to avoid wash-off after application.
• Be Patient — Some herbicides may take time to show results. Be patient and apply treatments as directed.
• Use Proper Safety Measures — Always wear protective gear, including gloves and goggles, when applying herbicides.
• Follow Instructions Carefully — For safe and effective use, always follow the manufacturer’s guidelines on application and dosages.

By following these tips, you can effectively manage Autumn Olive and restore your landscape.

Conclusion

Choosing the right herbicide for Autumn Olive depends on factors such as infestation size, your preferred application method, and the time of year. Whether you opt for a foliar application or stump treatment, ensure that you use the product correctly for maximum control.

Always follow safety precautions and read the labels carefully. A combination of patience and the right herbicide will ensure that Autumn Olive is controlled, and your landscape remains healthy and beautiful.