Which symptoms are associated with herbicide damage?

Which symptoms are associated with herbicide damage?

• A. Cupped, malformed, chlorotic new growth
• B. Wilting of mature leaves
• C. Unchanged growth
• D. Excessive fruit production

Answer: (A)

Herbicide injury in ornamentals and turf often shows up first on new growth, because actively growing tissues are most sensitive to growth-regulating chemicals. When a herbicide disrupts hormone signaling or chloroplast development, the new leaves can curl or cup, become deformed, and show yellowing (chlorosis) as chlorophyll production is affected. This combination—cupped, malformed, chlorotic new growth—is a typical sign that a plant has been exposed to herbicide, often from drift or off-target contact. Wilting of mature leaves points more toward water stress or root issues; unchanged growth suggests no injury, and excessive fruit production isn’t associated with herbicide damage in this context.

Herbicide injury in ornamentals and turf often shows up first on new growth, because actively growing tissues are most sensitive to growth-regulating chemicals. When a herbicide disrupts hormone signaling or chloroplast development, the new leaves can curl or cup, become deformed, and show yellowing (chlorosis) as chlorophyll production is affected. This combination—cupped, malformed, chlorotic new growth—is a typical sign that a plant has been exposed to herbicide, often from drift or off-target contact. Wilting of mature leaves points more toward water stress or root issues; unchanged growth suggests no injury, and excessive fruit production isn’t associated with herbicide damage in this context.