Singapore Daisy (Sphagneticola trilobata) is a fast-growing, invasive weed that can take over gardens, landscapes, and natural habitats. Known for its bright yellow flowers and spreading growth habit, it is difficult to control without the right herbicide. Managing Singapore Daisy requires a herbicide that can tackle its persistent growth without damaging desirable plants.

This guide reviews the best herbicides for controlling Singapore Daisy, focusing on effective treatments for both small and large infestations. Whether you’re dealing with a few plants or widespread growth, these herbicides can help restore your landscape.

Best Herbicides for Singapore Daisy

1. Roundup Concentrate Plus

Roundup Concentrate Plus is one of the most popular and effective herbicides for controlling invasive plants like Singapore Daisy. This non-selective, systemic herbicide is absorbed by the plant and travels through its vascular system to kill it, including the roots.

Roundup is ideal for areas with widespread infestations of Singapore Daisy. It is fast-acting, but you should use caution when applying it, as it can harm surrounding plants.

2. Garlon 4 Herbicide

Garlon 4 is a powerful herbicide containing triclopyr that is highly effective in controlling weeds like Singapore Daisy. It is a systemic herbicide that is absorbed by the foliage and travels through the plant to kill both the above-ground parts and roots.

Garlon 4 is especially effective in woody plants and persistent weeds. It is a good option for larger infestations of Singapore Daisy, but care should be taken to avoid applying it to desirable plants.

3. Cimarron Plus Herbicide

Cimarron Plus is a selective herbicide that is effective against a wide range of broadleaf weeds, including Singapore Daisy. It contains the active ingredients metsulfuron-methyl and chlorsulfuron, which work together to inhibit growth and kill the weed.

This herbicide is great for controlling Singapore Daisy in turfgrass and rangeland settings without damaging the surrounding vegetation. Apply Cimarron Plus in early spring for the best results.

4. Triclopyr Ester Herbicide

Triclopyr Ester is a systemic herbicide that targets woody and broadleaf plants, including Singapore Daisy. It works by disrupting the plant’s growth process and causing it to die over time.

Triclopyr Ester is an excellent choice for larger infestations of Singapore Daisy, especially in areas where you want to preserve surrounding plants. It is highly effective but can be harmful to non-target vegetation.

5. Crossbow Herbicide

Crossbow is a broad-spectrum herbicide that contains a combination of triclopyr and 2,4-D, making it effective for controlling both woody and herbaceous weeds like Singapore Daisy.

Apply Crossbow to actively growing Singapore Daisy plants for the best results. It is a non-selective herbicide, so caution should be taken to avoid spraying on desirable plants.

6. Milestone Herbicide

Milestone is a selective herbicide that is effective against broadleaf weeds like Singapore Daisy. It contains aminopyralid, which interferes with the plant’s growth processes, leading to its death.

Milestone is a great option for targeted treatment of Singapore Daisy without harming other vegetation. It is particularly effective when applied during the plant’s active growing season.

7. Remedy Ultra Herbicide

Remedy Ultra is a systemic herbicide containing triclopyr that is highly effective at controlling invasive weeds like Singapore Daisy. It works by killing the plant’s root system and above-ground growth.

Remedy Ultra is ideal for large-scale infestations and is particularly effective in wetter areas where Singapore Daisy thrives. Use it with caution as it is a non-selective herbicide.

8. Chlorsulfuron Herbicide

Chlorsulfuron is a selective herbicide that is effective against a range of broadleaf weeds, including Singapore Daisy. It works by inhibiting protein synthesis in the plant, eventually leading to its death.

Chlorsulfuron is effective for controlling Singapore Daisy in pastures, lawns, and other areas where selective weed control is needed.

9. Tordon RTU Herbicide

Tordon RTU is a ready-to-use herbicide that contains picloram, which is effective in controlling tough, invasive weeds like Singapore Daisy. It is a systemic herbicide that is absorbed by the plant and moves to its roots to kill it.

Tordon RTU is a great option for small to medium-sized infestations of Singapore Daisy, especially in pastures or rangelands.

10. Aminopyralid Herbicide

Aminopyralid is a selective herbicide that targets deep-rooted weeds like Singapore Daisy. It works by preventing the plant from growing and reproducing, ultimately killing it.

This herbicide is effective for controlling Singapore Daisy, especially in large, established infestations.

Buyer’s Guide: Choosing the Best Herbicide for Singapore Daisy

When selecting the best herbicide for Singapore Daisy, consider these factors:

1. Herbicide Type

Systemic herbicides, such as Roundup and Garlon 4, are ideal for controlling Singapore Daisy as they are absorbed by the plant and kill it from the roots up. Non-systemic herbicides should be used carefully, as they may not be as effective for deep-rooted plants.

2. Selectivity

Selective herbicides like Milestone and Cimarron Plus target only the weeds while leaving desirable plants unharmed. Non-selective herbicides, such as Roundup, can kill surrounding vegetation and should be used with caution.

3. Timing of Application

For the best results, apply herbicides during the active growing season of Singapore Daisy, typically in the late spring or early summer. Pre-emergent herbicides are not effective against established plants.

4. Environmental Impact

Consider the environmental impact of the herbicide, especially if you are concerned about non-target plants and wildlife. Select products with lower toxicity to minimize harm to the surrounding environment.

5. Cost

Herbicides come in different price ranges. Larger infestations may require more product, so it’s essential to choose a product that fits your budget while still being effective.

Conclusion

Effectively controlling Singapore Daisy requires the right herbicide and proper application timing. Whether you choose a selective or non-selective herbicide, make sure to follow the label instructions for the best results. With the right product, you can prevent Singapore Daisy from overtaking your landscape and restore your garden or lawn to its original condition.