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Controlling Aphids and Ants on Washington Navel Orange

Leaf Curl on Citrus: Classic Aphid Infestation

Curling new leaves with ants = aphids. Aphids suck sap, excrete honeydew; ants farm them. Control aphids with insecticide (consult nursery); ants disappear. Pruning: "deadbrushing" removes dead, crossing, and juvenile shoots. Light pruning only.

Trees: Miniature Orange Tree Recovery: Water Stress and Sun Acclimation; Miniature Orange Tree Leaf Curl and No Flowers: Pot‑Bound or Pests?; Lilac and Catalpa Leaf Curl in Montreal: Heat, Pests, or Herbicide?; Navel Orange Leaf Curl: Aphids or Leaf Miners—Not Vegetable Oil; Water Oak Top Defoliation: Caterpillars Gone, Systemic for Next Year; Cottonwood Leaf Drop: Aphids, Borers, or Rust?; Cottonless Cottonwood Leaf Dieback: Likely Rust Disease; Maple Leaf Blister: Cosmetic Concern, Not a Health Threat; Locust Leaf Miner: Cause of Brown, "Fired" Foliage; Cherry Leaf Spot: Fungal Disease on Flowering Cherry

Garden Articles

Treating Leaf Miner and Health Issues in Grapefruit Trees

Guava Leaf Curl: Grasshopper Damage and Organic Deterrent Combo

Orange Tree Sudden Leaf Drop in Cool Weather: Temperature Fluctuation, Watering, or Scale—Cultural Fixes

Blood Orange Leaf Curl: Insect Pest Diagnosis

Leaf Galls on Oak Trees: Cosmetic Issue Requiring No Treatment

Cherry Blossom Leaf Curl: Heat and Humidity, Not Disease

Oak Early Leaf Drop: Drought Response, Not Death

Plants

Lilac in California: Humidity, Leaf Miner, and Pruning Rules

Mature Maple Tar Spot: Management and Fertilization

White Spots on Oak Leaves: Likely Powdery Mildew

Cedar-Apple Rust on Apple Trees: Identification and Management

Peach Leaf Curl: Spring Management for Infected Trees

Rust‑Colored Spots on Young Valencia Orange Leaves

Magnolia Scale: White Specks on Leaves and Stems