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Treating Black Spot on Wave Petunias with Copper Fungicide

Black bumps on wave petunia leaves in humid St. Louis likely indicate black spot fungus. Prevent with a copper-based fungicide like Soap Shield (Gardens Alive). Apply according to label.

Annuals: Mimosa Tree Scale Insects: Soil Drench Imidacloprid; Overwintered Tidal Wave Petunia Decline: Annuals Don't Live Forever; Petunias Dying in One Bed: Phytophthora Root Rot — Soilborne and Host-Specific; Why Wave Petunias from Seed Don’t Bloom Like Nursery Plants; Wave Petunias Yellowing & Dying: Watering, Fertilizer, or Virus?; Growing Wave Petunias from Seed: A Beginner's Guide to Success; Why Petunias Feel Sticky: Nature's Insect Defense; Tidal Wave Petunias Dying? You're Watering Way Too Much; How to Start Wave Petunias from Seed Indoors; Growing 'Wave' Petunias Successfully in Containers

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