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Why Are My Apple Tree Leaves Curling? Powdery Mildew and Insect Pests

Curling apple leaves may indicate powdery mildew (look for powdery film) or insects. Aphids and leafrollers are the most common culprits. Inspect inside curled leaves for insects. If severe, spray appropriate insecticide. Minor rolling rarely affects crop yield—monitor before treating.

Tree: Apple Tree Curly Leaves: Powdery Mildew on Single Tree; Multiple Plant Leaf Curl After New Plantings: Crab Apple Scab and Aphids; Lilac and Catalpa Leaf Curl in Montreal: Heat, Pests, or Herbicide?; Black Spot Fungus on Mature Maple: Why Fall Cleanup Beats Spring Spraying; Umbrella Tree Leaf Drop: Acclimation, Light, Water, and Pests; New Astilbe Leaves Withering: Transplant Shock, Not Death; Troubleshooting Curling Frond Tips on Mature Staghorn Ferns; Why Are My Orchid Leaves Turning Yellow? Troubleshooting Guide; Rhododendron Leaves Rolling and Wilting: Cold or Disease?; Why Houseplant Leaves Turn Yellow

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