From labels and weed guides
Best herbicides for annual smartweed in safflower
For annual smartweed in safflower, the weed guides list 3 active-ingredient groups rated good or excellent, after checking that the products are labeled for safflower.
Annual Smartweed control in safflower
Every listed product is labeled for safflower. Ratings are shown when each weed guide that rates this weed stays at good or excellent for the active-ingredient group. If a guide gives a range, the weaker end of the range has to be good or excellent.
Based on 1 weed guide, 3 active-ingredient groups are rated good or excellent for annual smartweed in safflower.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| Bonedry EPA 82557-1; same active ingredients on 13 other branded products | paraquat | 22 | ND Weed Guide 2026: E (PDF) |
| Antares EPA 82534-5-5905; same active ingredients on 8 other branded products | sulfentrazone | 14 | ND Weed Guide 2026: G-E (PDF) |
| Harmony SG EPA 279-9595; same active ingredients on 1 other branded product | thifensulfuron | 2 | ND Weed Guide 2026: E (PDF) |
Rating legend: E=excellent, G=good, F=fair, P=poor, N=no control. 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.
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Sources
Data from current labels and weed guides. Last source update: 2026-07-14.