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<br />tluckthom: What you can do! - Invasive species: Minnesota DNR <br /> <br />Page I of3 <br /> <br />What you can do to control buckthorn! <br /> <br />Controlling seedlings or small <br />buckthorn plants <br /> <br /> <br />For individual plants <br /> <br />If less than 3/8 inch in diameter, remove by hand. <br />Small seedlings can be pulled and will not re-sprout. If <br />greater than 3/8 inch, use a hand tool that pulls the <br />shrub out, such as a "Weed Wrench" or "Root Talon". <br />The "Weed Wrench" comes in four different sizes and <br />will remove buckthorn stems up to 2.S inches in <br />diameter. Removing by hand is easier if the soil is <br />moist. Before you pull or dig buckthorn out of your soil, <br />Contact Gopher State One Call (1-800-252-1166) <br />to ensure there are no buried utilities in the area. <br /> <br />If pulling individual plants is impractical <br /> <br />Spray foliage of short buckthorn or seedlings with a <br />herbicide. Glyphosate (one brand name is Roundup) will <br />kill all actively growing vegetation on which it is <br />sprayed. Triclopyr will kill broad leaf plants and will not harm grasses when applied <br />properly. <br /> <br />Controlling large buckthorn <br /> <br />Buckthorn plants that are two inches in diameter or larger, are best controlled by <br />cutting the stem at the soil surface and then cover or treat the stump to prevent re- <br />sprouting. This can be effectively done with hand tools (for a few plants), chain saws <br />or brush cutters. If only cutting a few stumps they can be covered with a tin can or <br />black plastic to prevent re-sprouting. Otherwise, stumps should be treated <br />immediately after cutting (within 2 hours) with a herbicide containing Triclopyr (such <br />as Ortho Brush-B-Gon or Garlon 3A or 4) or Glyphosate (Roundup) to prevent re- <br />sprouting. <br /> <br /> <br />The best time to cut and chemically treat <br />the stumps is in late summer and <br />throughout the fall. Herbicides can be <br />applied to cut stumps with a paint-brush, <br />wick applicator [ill] or a low volume <br />sprayer. When using water-soluble <br />herbicide products like Ortho Brush-B- <br />Gon, Garlon 3A, or any of the Glyphosate <br />products, treat only the cut surface. When <br />using oil-based products like Garlon 4, <br />treat the cut surface and the remaining <br />bark to the ground line. In cases where <br />more than a few plants are treated, add <br />an indicator dye (available where pesticides are sold) to the herbicide to mark cut <br /> <br />hnp:/ /www.dnr.stale.mn.us/invasives/terrestrialplants/woody!buckthom/control.html <br /> <br />5/29/2009 <br />