small rhododendrons

What Will Kill Rhododendron? Prepare 1/2 gallon of an 18- to 21-percent solution of glyphosate or triclopyr herbicide in a plastic jug. Glyphosate and triclopyr are the two herbicides approved for home use and available at any garden store. How do I get rid of rhododendrons? Dig a hole for your rhododendron or azalea in