Herbicide Damage
Authors: Aaron Bergdahl and Joseph Zeleznik
Symptoms
• Abnormal growth, necrosis, blistering and discoloration occurs in plant tissues.
![Figure 1 – Leaf cupping of hybrid elm due to exposure to growth regulator-type herbicides. Damage would be similar on apple leaves.](/agriculture/sites/default/files/2022-08/herbicide-damage1.jpeg)
![Figure 2 – Strapping and distortion of apples leaves due to exposure to growth regulator-type herbicides](/agriculture/sites/default/files/2022-08/herbicide-damage2.jpeg)
Management and other important facts
• Always read and follow the product label when applying herbicides.
• Avoid applying herbicides during windy conditions to prevent herbicide drift.
• Avoid applying broadleaf herbicides on warm days.
• The use of farm-grade chemicals for broadleaf weed control on lawns has killed even mature trees.