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Poplar Leaf Spots: Fungal Leaf Spot, Not Insects

Light brown-white spots with holes on 3-year-old poplars in Nevada are leaf spot fungus, not insects. Late-season infection—cosmetic only. Copper fungicide at spring leaf emergence prevents it. If spots appear late summer, ignore—no health impact.

Pests: Distinguishing Environmental Leaf Spots from Disease on Wax Begonias; Poplar Leaf Blackening: Powdery Mildew Unlikely, Sanitation Key; Holly Leaf Spots and Curling: Fungal Leaf Spot, Not Aphids; Slug Damage on Young Sunflowers: Organic Control with Iron Phosphate; Identifying and Treating Insect Damage on Orchid Leaves; Safe Control of Rose Stem Borers and Leaf-Eating Insects Without Harming Birds; Almond Tree Leaves Skeletonized: Japanese Beetles; Identifying and Controlling Sarracenia Leaf Damage in East Texas; Gardenia Leaf Damage: Identifying Hidden Pests on Container Plants; Black Vine Weevil Damage on New Burning Bush

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