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Marigold Virus (TSWV/INSV) in North India: No Cure—Discard, Control Thrips

Marigold with viral symptoms

Diagnosis

Symptoms match Tomato Spotted Wilt Virus (TSWV) or Impatiens Necrotic Spot Virus (INSV). Vector: thrips (tiny insects).

Action

Discard and replace plants—no cure.
Control thrips on nearby plants.
Test via county Extension (Purdue lab).

Resource

Cornell TSWV fact sheet

Plant Diseases: Marigold Leaf Damage: Identifying the "Silvery Scales" Pest; Marigold Wilt Not Responding to Dimethoate: Bacterial Wilt or Other Fungus—Try Neem, Then Replace; Tomato Leaf Curl: Fusarium Wilt or Water Stress?; Mimosa Wilt vs. Slime Flux: Fatal Disease Diagnosis in Kansas; Diagnosing and Managing Oak Wilt; Is There a Hardy Perennial Marigold for Illinois Gardens?; Marigold Magic: Types, Cultivation & Medicinal Power; Tomato Spotted Wilt Virus Confirmed by UGA Lab; Hydrangea Virus: Chlorotic Mottle—Remove Infected Plant; Raspberry Virus Symptoms: Mottled, Stunted Canes

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