Identifying and Managing Garden Pests Organically

Pests fall into three categories: sap-suckers, leaf-eaters, and wood-borers. Organic remedies target each without harming beneficials.

Sap-Suckers

Aphids: Tiny, colored, often with ants. Spray habanero pepper water.
Spider mites: Powder-like on leaves. Spray buttermilk/flour/water or cigarette tea + Ivory soap.
Scale, leafhoppers, whiteflies: Fish emulsion spray (2 tbsp/quart).

Caterpillars: Roll in leaves. Hand-pick damaged leaves. Not all become butterflies—some are wasps (beneficial).
Leaf miners: Chewed edges. Garlic/Ivory soap spray.
Sawflies: Mimic caterpillars, ravage roses. Garlic/soap spray; paper wasps are natural predators.

Cane borers (roses): Cut below hole, seal with carpenter's glue, burn cuttings.
Raspberry cane borer: Same method; or sulfur/lime/oil spray for heavy infestation.
Bark beetles (Dutch elm, pine): Carry fatal fungi. Young trees: cider-soaked cloth wraps. Mature: Dursban (toxic) or pyrethrins/verbenone (natural).

Chemicals kill indiscriminately. Try cultural fixes first: proper water, spacing, soil aeration. Spray only when necessary, using targeted organics.

Landscaping: Ligustrum Leaf Issues: Diagnosing Tiny Leaves and Browning in Florida; Sticky Residue on Stephanotis: Honeydew and Sooty Mold; Gardenia Leaf Curl and Powder After Insecticide Spray; Bougainvillea Fungal Leaf Spot: Diagnosis and Recovery Plan; Yucca Natural Leaf Drop vs. Nutrient Deficiency; Schefflera Dropping Leaves? Check Watering and Root Health; Schefflera Losing Leaves in Low Light: Repotting, Salt Leaching, and Nutrient Clues; Identifying a Leafless Mystery Plant: Why Foliage Is Essential for Diagnosis; Lucky Bamboo Yellowing: Light, Water, and Root Health; Common Pests of Sage Plants and How to Control Them

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