Using a brush herbicide after cutting down a buckthorn stem with a big diameter can be useful in controlling the buckthorn.Buckthorn management is best achieved with the use of herbicides containing glyphosate or triclopyr.Apply the herbicide to the stump with a paintbrush, dauber, or low-volume sprayer, covering an inch or so in from the edge of the outer bark and allowing it to dry completely.

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. When using herbicides, always read and follow the label directions.

How do herbicides affect buckthorn plants?

The effects of herbicides on buckthorn plants are dependent on the stage of growth at which they are applied. When plants are in the process of leaf development, the plant’s energy is directed upward, which reduces the effectiveness of herbicides when applied to freshly cut stumps and cuts at the base of stems or the trunk (basal cuts).

Should buckthorn be cut close to the ground?

Cutting buckthorn near to the ground should be avoided unless the freshly cut stump is treated right afterwards. Without treatment, vigorous re-sprouting will occur, resulting in the formation of several new buckthorn stems. Instead of one original plant stem being cut and treated, a large number of new sprouts will each require cutting and treatment on their own.

How long does it take for a buckthorn stump to die?

It may take a year or two for the stump to die, but there are no chemicals employed in the process of decomposing it. Invented by a Minnesotan who was fed up with losing the war against buckthorn and didn’t want to resort to using chemicals, the Buckthorn Baggie was designed to combat buckthorn.

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