The best herbicide for nandina is crucial for managing this invasive shrub that can quickly spread in gardens, landscapes, and natural areas.

Nandina, also known as heavenly bamboo, can be challenging to control due to its resilience and aggressive growth.

However, with the right herbicide, you can prevent Nandina from overtaking your space.

In this article, we will explore the best herbicides for controlling nandina, focusing on both selective and non-selective options, and offer tips on how to use them effectively.

10 Best Herbicides for Nandina

1. Garlon 4

Garlon 4 is a highly effective herbicide for controlling nandina. It targets a broad range of woody plants, including nandina, without harming the surrounding vegetation. This herbicide is ideal for non-crop areas, roadsides, and forests.

Apply Garlon 4 directly to the leaves or stems of nandina plants for the best results. The active ingredients work systemically to kill the plant down to its roots, ensuring long-term control.

For large infestations, it is best to use Garlon 4 during the growing season when the plant is actively absorbing nutrients, enhancing the herbicide’s effectiveness.

2. Crossbow Herbicide

Crossbow Herbicide is a versatile herbicide that is excellent for eliminating tough, woody plants like nandina. It contains a combination of triclopyr and 2,4-D, which work together to kill plants from the top down.

Crossbow is effective for both foliar application and cut-stump treatments. The product is especially effective in non-lawn areas, such as forests and along fence lines, where nandina is often invasive.

For best results, apply Crossbow Herbicide during the active growing season when the plant is most vulnerable to absorption. It’s also ideal for controlling other woody invasives in the same area.

3. Roundup Concentrate Plus

Roundup Concentrate Plus is a powerful non-selective herbicide that effectively targets nandina plants. This glyphosate-based solution works by killing the plant down to its roots after it is absorbed by the leaves.

It’s perfect for clearing large areas of invasive plants like nandina, though you must be cautious around other vegetation since it can damage any plant it contacts.

Roundup Concentrate Plus works best when applied during the active growth phase of nandina, ensuring that the herbicide is absorbed fully and translocated throughout the plant.

4. Triclopyr Herbicide

Triclopyr Herbicide is a specialized herbicide designed to target woody plants like nandina. It is absorbed by the plant’s leaves and moves throughout the plant to kill the roots.

This herbicide works well for both small and large infestations of nandina, and it is often used in forests and natural landscapes where the plant is spreading.

Triclopyr is a systemic herbicide, meaning that it works over time. It is essential to follow the manufacturer’s instructions and apply it during the plant’s active growth stage for the most effective results.

5. Imazapyr Herbicide

Imazapyr Herbicide is a powerful solution used for controlling tough weeds like nandina. It works by preventing new growth and killing the roots of the plant.

Imazapyr is often used for larger infestations, as it can be applied both as a foliar spray or a soil treatment. The herbicide is effective against both perennial and annual plants.

When using Imazapyr, avoid applying it near desirable plants, as it can negatively affect their growth. It’s best used in areas where no other vegetation is desired.

6. Kleencut Herbicide

Kleencut Herbicide is a contact herbicide effective in killing top growth, including the leaves and stems of nandina plants. While it doesn’t affect the roots, it can help in controlling smaller infestations.

Use Kleencut Herbicide when you want to eliminate the visible parts of nandina quickly. This herbicide is effective for preventing new growth in plants that have been pruned back.

Kleencut can be used as part of a larger management strategy that includes root-targeting herbicides for a more complete solution to nandina control.

7. Vinegar Herbicide

Vinegar Herbicide is a natural alternative to chemical herbicides. It works by drying out the plant’s tissues and disrupting the cellular structure.

While vinegar may not kill nandina down to the roots, it is effective for top growth and preventing the plant from spreading further. It’s a great option for those who prefer eco-friendly methods.

For best results, apply vinegar during hot, dry weather and multiple applications may be needed to manage the plant.

8. Ornamec Over-The-Top Herbicide

Ornamec Over-The-Top Herbicide is a selective herbicide designed to target broadleaf weeds like nandina. It is safe for use in landscaped areas while still being effective against invasive shrubs.

This herbicide is applied to the leaves and works by stopping the plant’s ability to absorb nutrients, causing it to die off over time. It is best used on smaller, younger plants.

Ornamec is a good option for ornamental gardens and areas where you want to preserve the surrounding plants while removing the nandina.

9. Celsius WG Herbicide

Celsius WG Herbicide is a selective systemic herbicide that is effective in controlling nandina and other woody plants. It is especially useful in warm climates where nandina thrives.

This herbicide works by blocking the plant’s ability to produce essential proteins, which ultimately kills the plant. It’s effective on both young and mature nandina plants.

Apply Celsius WG Herbicide in the early spring or fall for the best results, ensuring that the plant is actively growing and can absorb the herbicide effectively.

10. Killzall Weed & Grass Killer

Killzall Weed & Grass Killer is a potent non-selective herbicide that can be used for controlling nandina and other invasive species. It contains glyphosate, which effectively eliminates plants at the root level.

This herbicide is ideal for large-scale treatments where you want to remove nandina quickly and efficiently. It can be applied to both the foliage and the stems of the plant.

As with other non-selective herbicides, care should be taken to avoid contact with desirable plants, as it can harm them as well. Always follow the manufacturer’s application instructions for optimal results.

Factors to Consider Before Choosing a Herbicide

• 1. Type of Herbicide: Consider whether you need a selective or non-selective herbicide depending on the area you’re treating.
• 2. Application Method: Choose a herbicide with an application method that suits your needs, such as foliar spray or cut-stump treatment.
• 3. Safety: Always choose a herbicide that is safe for the plants in your garden or lawn. Follow the instructions to avoid damaging desirable vegetation.
• 4. Timing: Apply herbicide at the right time, such as during the growing season, to maximize its effectiveness.
• 5. Environmental Impact: Consider the environmental impact of the herbicide, particularly if you are working near water sources or sensitive areas.
• 6. Price: Compare prices to ensure you’re getting good value for your money, especially for larger treatments.

Best Herbicide for Nandina (FAQs)

• 1. What is the best time to apply herbicide for nandina? The best time to apply herbicide for nandina is during the growing season, typically in the spring or fall.
• 2. Is Garlon 4 safe for my other plants? Yes, Garlon 4 is a selective herbicide that won’t harm surrounding vegetation if applied carefully.
• 3. Can I use Roundup in my garden? Roundup is a non-selective herbicide, so it can damage other plants in your garden. Apply it carefully and avoid overspray.
• 4. How long does it take for herbicide to kill nandina? Herbicides like Garlon 4 or Crossbow can take a few weeks to fully kill nandina, depending on the size of the plant.
• 5. Can I apply herbicide during the summer? It’s best to apply herbicide during the cooler months of spring or fall, when plants are actively growing.
• 6. Are there natural alternatives to herbicides for nandina? Yes, natural methods like hand-pulling, cutting back the plant, or using vinegar-based solutions can be effective but may take longer.
• 7. Will herbicide kill all plants in my garden? Selective herbicides will target only specific plants, but non-selective herbicides will kill any plant they come into contact with.

Conclusion

Choosing the right herbicide is essential for controlling nandina in your garden or landscape. Whether you use selective or non-selective herbicides, applying them at the correct time and following safety guidelines will help you effectively manage this invasive shrub.

With the correct herbicide   and the right approach, you can keep your garden or lawn free from nandina and other invasive plants.