From labels and weed guides
Best herbicides for giant ragweed in sunflower
For giant ragweed in sunflower, the weed guides list 2 active-ingredient groups with every rating at least 80% control, after checking that the products are labeled for sunflower.
Giant Ragweed control in sunflower
Every listed product is labeled for sunflower. Ratings are shown when each weed guide that rates this weed has a lower interval bound of at least 80% control for the active-ingredient group. If a guide gives a range, its lower bound must be at least 80%.
Based on 1 weed guide, 2 active-ingredient groups are rated at least 80% control for giant ragweed in sunflower.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| Bonedry EPA 82557-1; same active ingredients on 13 other branded products | paraquat | 22 | WinField Crop Protection 2026, sunflower safflower: G → 81–90% control (PDF) |
| Sequence EPA 100-1185 | glyphosate and metolachlor | 9, 15 | WinField Crop Protection 2026, sunflower safflower: E → 91–100% control (PDF) |
Rating bands: E 90-100%, G 80-89%, F 70-79%, P under 70%, N none. Policy intervals are marked in the source ratings. A range such as G-E means the guide gives a range; 'a' after a rating (e.g., Ga) means the guide assumes its recommended additive. Read the rating method.
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Sources
Data from current labels and weed guides. Last source update: 2026-09-30.