From labels and weed guides
Best herbicides for sunflower in fallow
For sunflower in fallow, the weed guides list 25 active-ingredient groups rated good or excellent, after checking that the products are labeled for fallow.
Sunflower control in fallow
Every listed product is labeled for fallow. 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 2 weed guides, 25 active-ingredient groups are rated good or excellent for sunflower in fallow, 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 67 other branded products | 2,4-d | 4 | ND Weed Guide 2026: E (PDF) |
| Alligare Dicamba 4 EPA 81927-55; same active ingredients on 36 other branded products | dicamba | 4 | ND Weed Guide 2026: E (PDF); ND Weed Guide 2026: G-E (PDF) |
| AAtrex 4L EPA 100-497; same active ingredients on 32 other branded products | atrazine | 5 | ND Weed Guide 2026: G (PDF) |
| Actylis Glufosinate 280SL EPA 2749-637; same active ingredients on 31 other branded products | glufosinate | 10 | ND Weed Guide 2026: E (PDF) |
| Bite EPA 83529-74; same active ingredients on 9 other branded products | clopyralid | 4 | ND Weed Guide 2026: G-E (PDF) |
| Comet EPA 71368-87; same active ingredients on 7 other branded products | fluroxypyr 1-methylheptyl ester | 4 | ND Weed Guide 2026: E (PDF) |
| Divergence 75 WDG EPA 34704-1179; same active ingredients on 5 other branded products | sulfosulfuron | 2 | ND Weed Guide 2026: E (PDF) |
| Herbivore EPA 2749-528-1381; same active ingredients on 5 other branded products | halosulfuron-methyl | 2 | ND Weed Guide 2026: E (PDF) |
| Comply EPA 100-1414-55467; same active ingredients on 4 other branded products | atrazine, mesotrione, and metolachlor | 5, 15, 27 | ND Weed Guide 2026: E (PDF); ND Weed Guide 2026: G-E (PDF) |
| Harmony GT XP EPA 279-9577; same active ingredients on 4 other branded products | thifensulfuron | 2 | ND Weed Guide 2026: G-E (PDF) |
| Enlist Duo EPA 62719-649; same active ingredients on 3 other branded products | 2,4-d and glyphosate | 4, 9 | ND Weed Guide 2026: E (PDF) |
| MCPA Amine EPA 1381-104; same active ingredients on 3 other branded products | mcpa | 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.