DAMAGE/SYMPTOMS Leaves appear narrow and chlorotic. Branches may die back starting at the tip, and growth from buds below the dieback portion of the branch may be chlorotic and distorted with excessive sprouting called “witch’s broom.”

OCCURRENCE Glyphosate is commonly used around trees to control weeds. This practice is usually safe for trees since glyphosate is not generally absorbed by plant roots or mature bark. However, if glyphosate contacts aboveground growth such as leaves or root suckers, it can impact the tree. Glyphosate may also be absorbed through young bark or exposed roots.

SUSCEPTIBILITY/TOLERANCE Glyphosate is non-selective, meaning all types of plants are susceptible.

MANAGEMENT Monitor the tree to see if it recovers. Support tree health and limit further exposure to herbicides. To limit stress to the tree during recovery, do not prune or fertilize the tree for one growing season. Injury symptoms may occur for more than one year. To prevent glyphosate damage, be sure to protect all desired plants from contact with this herbicide.

 

A Glyphosate injury on deciduous tree.

 

Tree branch with leaves that are yellowish-green and smaller and narrower than usual.