Botanic Garden >> Gardening > >> Question and Answer >> Pests

Neem Oil Timing for Ginkgo: Start at Leaf Expansion

Neem oil for caterpillar prevention on ginkgo: begin when leaves fully expand, spray every 10 days x 6. Or systemic (Bayer Advanced) at soil for season-long protection.

Options

Neem: Multiple sprays, timing critical.
Systemic: One soil drench, roots distribute to leaves.
Know pest: ID caterpillar for precise timing.

Systemic easier for trees.

Pests: Black Sooty Mold on Hackberry: Controlling the Aphids and Scale Behind It; Hydrangea Tree Yellowing and Leaf Drop: Water Stress, Not Spray Damage; Dwarf Grapefruit in Greenhouse: Leaf Yellowing and Browning; Lemon Tree Mysterious Decline: No Clear Pathogen, Focus on Cultural Care; Carrotwood Pale Curled Leaves After Pruning: Stress or Pests?; Plumeria Spider Mites: Organic Control and Plant Health; Grasshoppers Eating Plumeria Leaves: Neem Oil Spray Test; Neem Oil Smell Alternatives: Horticultural Oil or Perfume; Neem Oil for Vegetable Gardens: Application Tips and Rainfastness; Neem Oil: A Natural Solution for Houseplant Pests and Diseases

Garden Articles

Ginkgo Leaf Curl After Wet Spring: Temporary Stress Response

Mango Tree One-Sided Dieback: Prune to Healthy Wood

Ginkgo Tree with Small Leaves and Suckers: Cold Injury and Stress Recovery

Ginkgo Tree Half Leaf-Out: Woodpeckers or Water Issues

Pruning Young Empress Trees: Managing Suckers for Strong Structure

Tree Leaf Identification Resources for Science Projects and Homeowners

Identifying a Non-Blooming Magnolia as Possibly Fraser Magnolia

Plants

Fall Webworms in Houston: Identification and Management

Neem Oil Extract as Fungicide for Carnivorous Plants: Tested Effectiveness

Diagnosing Leaf Drop in Ficus Trees

Hibiscus Tree Care: Light, Fertilizer, and Pest Management for Blooms

Reviving a Declining Jasmine Tree: Light, Temperature, and Pruning

Taiwan Ficus Bonsai Leaf Drop: Need Species ID and Details

Paulownia Tomentosa: The Fast-Growing Empress Tree and the Art of Pollarding