Identification

• Karen Jeanette of the University of Minnesota Extension recommends the use of glyphosate as an effective control method for buckthorn. The chemical is sold under different trade names.
  
  

Description

• Glyphosate is a nonselective herbicide that controls a variety of perennial and annual plants including woody plants such as buckthorn. The general-use herbicide can be used in combination with other chemicals to improve efficacy. Since the chemical is nonselective, take care in application as it can also harm nontarget plants.
  
  

Recommendations for Use

• Apply the herbicide when the plant is in an active growth stage and at temperatures above 32 degrees Fahrenheit. Cut back buckthorn and paint or spray the stumps with glyphosate within 24 hours of cutting. Use a concentrated formula with 25 percent or more of the chemical for best control.