From labels and weed guides
Best herbicides for waterhemp / palmer in flax
For waterhemp / palmer in flax, the weed guides list 1 active-ingredient group rated good or excellent, after checking that the products are labeled for flax.
Waterhemp / Palmer control in flax
Every listed product is labeled for flax. 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, 1 active-ingredient group is rated good or excellent for waterhemp / palmer in flax.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| ARGOS EPA 74530-71; same active ingredients on 20 other branded products | mesotrione | 27 | ND Weed Guide 2026: G (PDF); ND Weed Guide 2026: G-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.