Garden-Wide Contact Injury: Herbicide Drift Diagnosis

Brandon: light whitish-tan spots on virtually every plant (even weeds) in garden. Asks: soil deficiency, excess fertilizer, or disease?

Expert Diagnosis

Steve: unrelated plants with same symptoms = not infectious disease or insect. Spot distribution suggests contact injury. Check chemicals sprayed nearby past 1-2 weeks: herbicide drift on windy day. Plants likely recover depending on dose.

Follow-Up: Fertilizer Burn Possibility

Brandon: surrounded by fields, overspray likely. Asks if fertilizer contact could cause similar coloration.

Steve: yes, if mixed wrong causing injury. Contaminated sprayers (weed killer residue) common cause. Best practice: never use same sprayer for herbicides and other products. Check field plants for similar spots.

Key Insight

Universal symptoms across diverse species = abiotic/environmental cause. Herbicide drift and sprayer contamination are top suspects. Pattern recognition prevents misdiagnosis as disease.