Tansy (Tanacetum vulgare) is a highly invasive perennial weed that can quickly overtake gardens, pastures, and natural areas. The best herbicide for tansy is essential to control its aggressive growth and prevent it from spreading further.

This guide highlights the top herbicides for tansy control, focusing on both selective and non-selective options. Whether you are dealing with a small patch or a large infestation, there is a solution tailored to your needs.

Best Herbicides for Tansy

1. Glyphosate-Based Herbicides– non-selective herbicide for tansy

Glyphosate-based herbicides are highly effective for controlling tansy. These herbicides are non-selective, meaning they kill most plants they come into contact with, so careful application is necessary to avoid damaging desirable plants.

Glyphosate works by inhibiting an enzyme essential for plant growth, leading to the death of the tansy. It is best applied as a foliar spray, directly onto the leaves of the plant. For best results, apply during the growing season when the plant is actively transporting nutrients.

One of the key advantages of glyphosate is its ability to penetrate the plant’s system and kill it from the roots up. This ensures that the tansy does not regrow, providing long-lasting control. Always follow the manufacturer’s instructions for safe and effective use.

2. Triclopyr-Based Herbicides– selective herbicide for tansy

Triclopyr-based herbicides are selective herbicides that target broadleaf plants like tansy while sparing most grasses. They are particularly effective for controlling tansy in gardens and landscaped areas.

This herbicide works by mimicking a plant hormone, causing uncontrolled growth that leads to the death of the tansy. It is best applied as a foliar spray, directly onto the leaves of the plant. For best results, apply during the growing season when the plant is actively transporting nutrients.

One of the benefits of triclopyr is its selectivity, which makes it safe for use in areas with desirable plants. It is also rainfast within a few hours of application, ensuring that it remains effective even after rainfall. Always follow the label instructions for optimal results.

3. 2,4-D Herbicide– herbicide for tansy in lawns

2,4-D is a selective herbicide that targets broadleaf plants like tansy. It is commonly used in lawns and turf areas to control invasive weeds.

This herbicide works by mimicking a plant hormone, causing uncontrolled growth that leads to the death of the tansy. It is best applied as a foliar spray, directly onto the leaves of the plant. For best results, apply during the growing season when the plant is actively transporting nutrients.

One of the benefits of 2,4-D is its selectivity, which makes it safe for use in areas with desirable grasses. It is also rainfast within a few hours of application, ensuring that it remains effective even after rainfall. Always follow the label instructions for optimal results.

4. Dicamba Herbicide– herbicide for tough tansy infestations

Dicamba is a selective herbicide that targets tough broadleaf weeds like tansy. It is often used in combination with other herbicides for enhanced control.

This herbicide works by mimicking a plant hormone, causing uncontrolled growth that leads to the death of the tansy. It is best applied as a foliar spray, directly onto the leaves of the plant. For best results, apply during the growing season when the plant is actively transporting nutrients.

One of the benefits of dicamba is its ability to control a wide range of broadleaf weeds. It is also rainfast within a few hours of application, ensuring that it remains effective even after rainfall. Always follow the label instructions for optimal results.

5. Imazapyr Herbicide– herbicide for tansy in non-crop areas

Imazapyr is a non-selective herbicide that provides long-lasting control of tansy. It is commonly used in non-crop areas like roadsides and fence lines.

This herbicide works by inhibiting an enzyme essential for plant growth, leading to the death of the tansy. It is best applied as a foliar spray, directly onto the leaves of the plant. For best results, apply during the growing season when the plant is actively transporting nutrients.

One of the key advantages of imazapyr is its residual activity, which prevents regrowth for an extended period. This makes it an excellent choice for large-scale tansy control. Always follow the manufacturer’s instructions for safe and effective use.

6. Aminopyralid Herbicide– herbicide for tansy in pastures

Aminopyralid is a selective herbicide that targets broadleaf plants like tansy. It is particularly effective in pastures and rangelands.

This herbicide works by mimicking a plant hormone, causing uncontrolled growth that leads to the death of the tansy. It is best applied as a foliar spray or directly to the soil around the plant. For best results, apply during the growing season when the plant is actively transporting nutrients.

One of the benefits of aminopyralid is its residual activity, which prevents regrowth for an extended period. This makes it an excellent choice for large-scale tansy control. Always follow the manufacturer’s instructions for safe and effective use.

7. Metsulfuron-Methyl Herbicide– herbicide for tansy in large areas

Metsulfuron-methyl is a selective herbicide that targets broadleaf plants like tansy. It is often used in large areas to control invasive weeds.

This herbicide works by inhibiting an enzyme essential for plant growth, leading to the death of the tansy. It is best applied as a foliar spray, directly onto the leaves of the plant. For best results, apply during the growing season when the plant is actively transporting nutrients.

One of the benefits of metsulfuron-methyl is its ability to control a wide range of weeds. It is also rainfast within a few hours of application, ensuring that it remains effective even after rainfall. Always follow the label instructions for optimal results.

8. Fluroxypyr Herbicide– herbicide for tansy in lawns

Fluroxypyr is a selective herbicide that targets broadleaf plants like tansy. It is commonly used in lawns and turf areas to control invasive weeds.

This herbicide works by mimicking a plant hormone, causing uncontrolled growth that leads to the death of the tansy. It is best applied as a foliar spray, directly onto the leaves of the plant. For best results, apply during the growing season when the plant is actively transporting nutrients.

One of the benefits of fluroxypyr is its selectivity, which makes it safe for use in areas with desirable grasses. It is also rainfast within a few hours of application, ensuring that it remains effective even after rainfall. Always follow the label instructions for optimal results.

9. Clopyralid Herbicide– herbicide for tansy in turf areas

Clopyralid is a selective herbicide that targets broadleaf plants like tansy. It is commonly used in turf areas and lawns to control invasive weeds.

This herbicide works by mimicking a plant hormone, causing uncontrolled growth that leads to the death of the tansy. It is best applied as a foliar spray, directly onto the leaves of the plant. For best results, apply during the growing season when the plant is actively transporting nutrients.

One of the benefits of clopyralid is its selectivity, which makes it safe for use in areas with desirable grasses. It is also rainfast within a few hours of application, ensuring that it remains effective even after rainfall. Always follow the label instructions for optimal results.

10. Hexazinone Herbicide– herbicide for tansy in forestry

Hexazinone is a non-selective herbicide that provides long-lasting control of tansy. It is commonly used in forestry and large-scale land management.

This herbicide works by inhibiting photosynthesis in the tansy, leading to its death. It is best applied as a soil treatment or foliar spray. For best results, apply during the growing season when the plant is actively transporting nutrients.

One of the key advantages of hexazinone is its residual activity, which prevents regrowth for an extended period. This makes it an excellent choice for large-scale tansy control. Always follow the manufacturer’s instructions for safe and effective use.

Buyer’s Guide for the Best Tansy Herbicide

• Choose a Selective Tansy Herbicide — Opt for a herbicide that specifically targets tansy without harming your desirable plants like grass or shrubs. Selective formulas are designed to eliminate tansy while keeping your garden healthy.
• Check Active Ingredients in Tansy Herbicide — Ensure the herbicide contains proven active ingredients such as Triclopyr or Glyphosate. These ingredients are particularly effective at killing tansy, ensuring complete eradication when applied directly to the foliage.
• Pre-Emergent vs. Post-Emergent Tansy Herbicide — Choose a herbicide based on your needs—pre-emergents work to prevent the germination of tansy seeds, while post-emergents are formulated to tackle established plants. Consider which stage of growth you need to target.
• Consider Application Method for Tansy Herbicide — Decide whether you need a spray or granular herbicide. Sprays are ideal for large, sprawling infestations of tansy, while granules are perfect for more targeted treatments around trees and shrubs.
• Look for Long-Lasting Control in Tansy Herbicide — Choose a herbicide with residual control properties. A long-lasting formula will help prevent regrowth and maintain a weed-free lawn by continuing to work even after the initial application, giving you extended protection against tansy.
• Eco-Friendly Tansy Herbicide Options — For an environmentally conscious approach, select a bio-based herbicide. These eco-friendly options are designed to minimize damage to non-target plants, soil, and wildlife, offering an effective solution that’s gentler on the environment.
• Check for Rainfastness in Tansy Herbicide — Ensure the herbicide is rainfast within a few hours of application. This feature ensures that rain won’t wash away the herbicide, allowing it to be fully absorbed by the plant for maximum effectiveness in eliminating tansy.

By keeping these tips in mind, you can confidently choose the best herbicide to control and eliminate tansy from your yard.

Conclusion

Choosing the right herbicide for tansy is crucial for maintaining a healthy landscape. Whether you need a selective herbicide to target tansy specifically or a non-selective one for broader control, proper application is key.

With the information provided in this guide, you can make an informed decision and enjoy a tansy-free garden or property. Always follow the manufacturer’s instructions to ensure safe and effective use of the herbicides.