Types of Herbicides

• The Michigan State University Extension lists paraquat, oxyfluorfen, bentazon, glyphosate and sethoxydim for the control of weeds in mints. All chemicals are sold under different trade names.
  
  

Function of Herbicides

• Products containing paraquat and oxyfluorfen are preemergence weed control strategies that retard the germination of weed seeds and keep them from growing. Bentazon and glyphosate products are postemergent herbicides controlling broadleaved weeds, and sethoxydim herbicides are postemergent control for grasses.
  
  

Usage of Herbicides

• Use paraquat and oxyfluorfen in dormant mint plantings prior to active growth in spring. Oxyfluorfen is likely to stunt the growth of mint plants growing in very light soil. Apply bentazon to very small-sized weeds, and use glyphosate as a spot treatment for weeds. Avoid spraying mint directly with glyphosate, as it can kill it. Apply products containing sethoxydim to actively growing grasses.