From labels and weed guides
Best herbicides for lambsquarters in annual ryegrass
For lambsquarters in annual ryegrass, the weed guides list 3 active-ingredient groups rated good or excellent, after checking that the products are labeled for annual ryegrass.
Lambsquarters control in annual ryegrass
Every listed product is labeled for annual ryegrass. 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 lambsquarters in annual ryegrass.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| ARGOS EPA 74530-71; same active ingredients on 13 other branded products | mesotrione | 27 | ND Weed Guide 2026: E (PDF) |
| Huskie EPA 264-1023 | bromoxynil and pyrasulfotole | 6, 27 | ND Weed Guide 2026: E (PDF) |
| Huskie FX EPA 264-1208 | bromoxynil, fluroxypyr 1-methylheptyl ester, and pyrasulfotole | 4, 6, 27 | 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.