- According to the City of Burnsville, Minn., more established plants should be trimmed down to the stump in the fall.
- The stump should then be treated with a herbicide containing at least 20% glysophate as soon as possible.
- Glysophate is toxic to all plants and must be applied in accordance with the manufacturer’s instructions to be effective.
- Is it possible to kill buckthorn without using chemical pesticides?
Treatment alternatives for herbicides. When dealing with cut stumps, the most effective chemical control options include treating the stump immediately after cutting (within 2 hours) with a herbicide containing triclopyr (Garlon 3A/Vastlan, Garlon 4, or other brush killers containing triclopyr) or glyphosate to prevent re-sprouting of the plant.