From labels and weed guides
Best herbicides for russian thistle in grass seed
For russian thistle in grass seed, the weed guides list 14 active-ingredient groups with every rating at least 80% control, after checking that the products are labeled for grass seed.
Russian Thistle control in grass seed
Every listed product is labeled for grass seed. 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, 14 active-ingredient groups are rated at least 80% control for russian thistle in grass seed, showing the top 12 below.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| 2,4-D Amine 4 EPA 1381-103; same active ingredients on 73 other branded products | 2,4-d | 4 | ND Weed Guide 2026: G → 80–90% control (PDF) |
| Actylis Metribuzin EPA 2749-660; same active ingredients on 15 other branded products | metribuzin | 5 | ND Weed Guide 2026: G-E → 80–99% control (PDF) |
| Bonedry EPA 82557-1; same active ingredients on 11 other branded products | paraquat | 22 | ND Weed Guide 2026: E → 90–99% control (PDF) |
| BLASTWAVE 240 EC EPA 103087-15; same active ingredients on 9 other branded products | oxyfluorfen | 14 | ND Weed Guide 2026: G-E → 80–99% control (PDF) |
| Bison EPA 71368-28-1381; same active ingredients on 5 other branded products | bromoxynil and mcpa | 4, 6 | ND Weed Guide 2026: E → 90–99% control (PDF) |
| Express EPA 279-9594; same active ingredients on 3 other branded products | tribenuron-methyl | 2 | ND Weed Guide 2026: Ea → 90–99% control (PDF) |
| Broclean EPA 34704-891; same active ingredients on 1 other branded product | bromoxynil | 6 | ND Weed Guide 2026: E → 90–99% control (PDF) |
| Commando EPA 42750-92; same active ingredients on 1 other branded product | 2,4-d and clopyralid | 4 | ND Weed Guide 2026: G → 80–90% control (PDF) |
| Curtail M EPA 62719-86 | clopyralid and mcpa | 4 | ND Weed Guide 2026: G → 80–90% control (PDF) |
| Fierce EZ EPA 59639-237 | flumioxazin and pyroxasulfone | 14, 15 | ND Weed Guide 2026: G-E → 80–99% control (PDF) |
| Huskie EPA 264-1023 | bromoxynil and pyrasulfotole | 6, 27 | ND Weed Guide 2026: E → 90–99% control (PDF) |
| Huskie FX EPA 264-1208 | bromoxynil, fluroxypyr 1-methylheptyl ester, and pyrasulfotole | 4, 6, 27 | ND Weed Guide 2026: E → 90–99% 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.