Holes in leaves indicate caterpillars or sucking insects. Apply organic insecticide per label. Mulch 6 inches for cool roots. Water 5 gallons every 5 days (sing "Happy Birthday" twice with a hose). Use slow-release fertilizer.
Rescuing a Miniature Rose from Spider Mites and Black Spot
Gray Specks + Lacy Leaves on Knockouts: Sawfly/Rose Slugs
Diagnosing Yellow Leaves and Powdery Film on Climbing Roses
Reviving a Newly Bought, Pest-Ridden Rose Bush
Indoor Tea Rose Care: Humidity and Spider Mite Prevention
Leaf Cutter Bees on Roses: Cosmetic Damage, No Harm Done
Unknown Bush Similar to Rose of Sharon – Genetic Variation
Identifying and Treating Rose Slug Damage on Container-Grown Knock Out Roses
Skeletonized Rose Leaves? It's Likely Rose Slugs, Not Caterpillars
Bottom-Up Leaf Loss on Roses Near Detroit
Sudden Rose Leaf Drop: Stress Causes and Recovery Assurance
Yellow Leaves with Holes: Insects, Watering, and the Two-Knuckle Test
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