From labels and weed guides
Best herbicides for canada thistle in triticale
For canada thistle in triticale, the weed guides list 2 active-ingredient groups rated good or excellent, after checking that the products are labeled for triticale.
Canada Thistle control in triticale
Every listed product is labeled for triticale. 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, 2 active-ingredient groups are rated good or excellent for canada thistle in triticale.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| Boomer PRX EPA 62719-685-55467; same active ingredients on 1 other branded product | clopyralid, fluroxypyr 1-methylheptyl ester, and pyroxsulam | 2, 4 | ND Weed Guide 2026: G-E (PDF) |
| Supremacy EPA 66330-406 | fluroxypyr 1-methylheptyl ester, thifensulfuron, and tribenuron-methyl | 2, 4 | ND Weed Guide 2026: G (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.