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Organic Control of Japanese Beetles and Slugs on Roses: Traps, Nematodes, and Coffee Grounds

Japanese Beetles: Multi-Pronged Attack

Hand-picking: Drop into soapy water. Do it morning, noon, and night (2 AM works!). Numbers drop fast.
Larval control (annual): Alternate Milky Spore Disease (bacterium) and Beneficial Nematodes (microscopic worms) to kill grubs in soil. Both are OMRI-listed.
Traps: Place away from roses to lure beetles elsewhere.

Slugs: Coffee Grounds Work!

Starbucks (and most cafés) give away spent grounds. Sprinkle a ring around each plant. Slugs absolutely refuse to cross caffeine. Reapply after rain.

Curling Leaves Diagnosis

Underwatering: Deep soak, not frequent sips. Water until soil is wet 12+ inches down.
Chemical spray damage? Any recent applications?
Color change? Yellowing = nutrient/water issue; reddish = possible virus.

Reply with details for a precise diagnosis.

Roses: Early Leaf Drop and Tree Decline in Kentucky: Heat Stress, Not Toxic Rain; Japanese Beetles and Powdery Mildew on Florida Roses; Japanese Beetle Damage on Knockout Roses: Identification and Control; Battling Japanese Beetles, Slugs, and Rose Curl: Organic Strategies That Work; Curled Leaves Touching Soil on African Violet: Genetic Trait and Mechanical Fixes; Soggy Lower Leaves on African Violets: Overwatering History and Root Rot Check; Preserving Autumn Leaves for Framed Artwork; Mulching and Winter Storage for Temperate Carnivorous Plants in Zone 6; Red Sister (Ti Plant) Care: Dry Soil, Bright Sun, Warmth; Using Fall Leaves in the Garden Without Composting

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