2,4-D and triclopyr are hormone-type herbicides used to control annual and perennial broadleaf weeds. These products are translocated throughout the plant.
Signs & Symptoms
Distorted plant parts, including twisting and curling on new growth
Swollen shoot tips
Severity of damage depends on amount applied, timing, and other herbicides in the mixture.
Damage also possible from drift of the herbicide
Where to Look
New growth is the most susceptible.
Similar Symptoms As
Shoot dieback
Management Options
Direct spray away from foliage. Use shields and low-drift nozzles.
If using a chemical, follow label directions for the rate, timing, and tree species.
Calibrate application equipment properly.
Avoid spraying on hot days. Amine forms are safer near trees.
