Glyphosate Herbicide Injury


Glyphosate is a non-selective herbicide. Trees and plants with woody stems can be treated at the base of the plant with a glyphosate containing product if label is followed. Woody plants with brown and dark bark coloration is less susceptible to injury that ones with tan, green, or light colored bark.


This herbicide inhibits a key enzyme in the amino acid synthesis pathway.

  • glyphosate

Characteristics of activity

  • Nonselective.
  • Translocated in both xylem and phloem.

Symptoms of injury

  • Slow chlorosis/necrosis of plant tissue.
  • Symptoms typically appear in 10 to 14 days after exposure.
  • A change in flower color may be noticed.
  • Stunting