Climbing Black-Eyed Susan Yellow Spots: Bacterial Leaf Spot and Bloom Boost

Zone 6 climbing black-eyed Susan has yellow spots on leaves and few flowers.

Diagnosis

Likely bacterial leaf spot (or fungal). Copper fungicide/bactericide (Hi-Yield) treats both.

Apply Hi-Yield Copper Fungicide/Bactericide per label for flowering plants.
Fertilize weekly with Miracle-Gro Super Bloom (high phosphorus) as foliar feed to promote flowers.

Good sanitation (remove spotted leaves) helps prevent spread.

Plant Diseases: Rescuing Black-Eyed Susans from Root Rot in Wet Conditions; Rudbeckia (Black-Eyed Susan) Foliage Decline: Multiple Culprits; Black-Eyed Susan Vine Declining: Drainage and Fertilizer Fixes; Rust Fungus on Black-Eyed Susan; Potted Black-Eyed Susan Drying Out: Root Shock and Overwatering; Black-Eyed Susan Fungal Disease: Prevention Only; Black-Eyed Susan (Rudbeckia): Growing America's Favorite Wildflower; Black Eyed Susan Daylily: A 1983 Stevens Classic; Black-Eyed Susan 'Goldsturm': Award-Winning Perennial; Black-Eyed Susan 'Goldsturm' – Award-Winning Perennial for Borders and Cut Flowers

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