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 Botanic Garden >> Gardening >  >> Question and Answer >> Plant Species >> Roses

Gray Specks + Lacy Leaves on Knockouts: Sawfly/Rose Slugs

Knockouts: gray specks on leaves (like paint splatter), then leaves eaten to veins.

Sawflies / Rose Slugs

Feed on undersides → leave paper-thin top layer → dies → lace/veins only.

Control

  • Blast with water (may wash off).
  • Bad infestation: Ortho RosePride Insecticide.
  • Spray undersides + base (where they hide).

Leaves renew—roses grow 3 sets.

Roses
Diagnosing Abnormal Rose Leaves: Light Green, Narrow, Shriveled Clusters
Black Spot on Roses: Identification, Myths & Effective Control
Rose Sawfly (Rose Slug) Damage: Identification and Control
Diagnosing and Treating Mealybugs or Spider Mites on Indoor Miniature Roses
Troubleshooting Leaf Loss on New Knockout Roses
Rescuing a Miniature Rose from Spider Mites and Black Spot
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
Shot Hole Fungus on Don Juan Rose – Not Insects
Garden Articles

Leaf Cutter Bees on Roses: Cosmetic Damage, No Harm Done

Deformed Rose Leaves: Proliferation, Viruses, or Insects?

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

Plants

Unknown Bush Similar to Rose of Sharon – Genetic Variation

Preserving Autumn Leaves for Framed Art

Rose Black Spot vs. Bud Blackening: Diagnosis and Dormant Oil Strategy

Controlling Rose Sawfly (Rose Slug) Larvae with Sevin Dust

Black Spot Defoliation on Roses in Kentucky: Identification and Treatment

White Powder on Rose Leaves? It's Powdery Mildew, Not Dust

Rose Trees (Standards): Living Sculpture for Formal Gardens

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