| Table 1. Recommended herbicides for controlling common perennial broadleaf weeds in the fall. | ||||
| Canada Thistle | ||||
| Herbicide | Rate | Timing1 (Weed growth stage) | Effectiveness | |
| glyphosate | 1.5-2% (see label) | Spot treatment (bud stage) | Good-Very Good | |
| glyphosate | 1.5-2.25 lb ae/A | Bud to bloom stage | Good-Very Good | |
| Banvel | 1-2 qt/A2 | Bud stage | Good-Very Good | |
| 2,4-D ester | 1-2 qt/A | Bud stage | Fair-Good | |
| 1Fall applications provide the most effective control. | ||||
| 2Banvel at 1 qt/A will provide suppression; 2 qt/A will provide control. | ||||
| Common Milkweed | ||||
| Herbicide | Rate | Timing1 (Weed growth stage) | Effectiveness | |
| glyphosate | 1.5-2% (see label) | Spot treatment (late bud to flower) | Fair-Good | |
| glyphosate | 2.25 lb ae/A | Late bud to flower | Fair-Good | |
| Banvel | 1-2 qt/A2 | Late bud to flower | Fair-Good | |
| Banvel + 2,4-D ester | 0.5 pt/A + 1 pt/A | Late bud to flower | Fair | |
| 1Fall applications provide the most effective control. | ||||
| 2Banvel at 1 qt/A will provide suppression; 2 qt/A will provide control. | ||||
| Field/Hedge Bindweed | ||||
| Herbicide | Rate | Timing1 (Weed growth stage) | Effectiveness | |
| glyphosate | 1.5-2% (see label) | Spot treatment (full bloom) | Good | |
| glyphosate + Banvel | 1.5 lb ae/A + 1 pt/A | Full bloom | Good | |
| glyphosate | 2.25 lb ae/A | Full bloom or beyond | Good | |
| Banvel | 1-2 qt/A2 | Full bloom | Good | |
| 1Do not treat when bindweed is under drought stress. | ||||
| 2Banvel at 1 qt/A will provide suppression; 2 qt/A will provide control. | ||||
| Hemp Dogbane | ||||
| Herbicide | Rate | Timing1 (Weed growth stage) | Effectiveness | |
| glyphosate | 1.5-2% (see label) | Spot treatment (late bud to flower) | Good | |
| glyphosate | 2.25 lb ae/A | Late bud to flower | Good | |
| Banvel | 1 qt/A | Late bud to flower | Good | |
| Banvel + 2,4-D | 0.5 pt/A + 1 pt/A | Late bud to flower | Fair-Good | |
| 1Fall applications provide the most effective control. | ||||
| Horsenettle | ||||
| Herbicide | Rate | Timing (Weed growth stage) | Effectiveness | |
| glyphosate | 1.5-2% (see label) | Spot treatment (late bud to flower) | Good | |
| glyphosate | 2.25 lb ae/A | Late bud to flower | Good | |
| Banvel | 1-2 qt/A1 | Late bud to flower | Good | |
| 2,4-D ester | 2 qt/A | Late bud to flower | Good | |
| 1Banvel at 1 qt/A will provide suppression; 2 qt/A will provide control. | ||||
| Perennial Sowthistle | ||||
| Herbicide | Rate | Timing (Weed growth stage) | Effectiveness | |
| glyphosate | 1.5-2% (see label) | Spot treatment (rosette stage) | Fair-Good | |
| 2,4-D ester | 1-2 qt/A | Rosette or bud stage | Good | |
| Banvel | 1-2 qt/A | Rosette or bud stage | Good | |
| 2,4-D ester + Banvel1 | 1 qt/A + 1 qt/A | Rosette or bud stage | Good | |
| glyphosate | 2.25 lb ae/A | Rosette stage only | Fair-Good | |
| 1Banvel or 2,4-D at 1 qt/A will provide suppression; 2 qt/A will provide control. Treatment for 2 consecutive years is best. | ||||