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Early Cottonwood Leaf Drop: Heat, Dryness, or Leaf Disease

Cottonwoods Are Early Shedders

Cottonwoods drop leaves first in fall. Hot, dry weather accelerates it. Leaf rust or spot diseases also cause early drop but don't harm long-term health.

No Action Needed

Late-season leaf fungi are cosmetic. Rake leaves to reduce inoculum. Tree will be fine next spring.

Trees: New Phalaenopsis Leaf Drop: Normal vs. Problematic Causes; Dendrobium Leaf Loss and White Patches: Sunburn and Scale Treatment; Phalaenopsis Leaf Drop: Causes and Recovery When Roots Appear Healthy; Preventing Winter Dieback on Red Carpet Roses: Stop Late Fertilizing and Spring Pruning; Flowering Crabapple Yellow Spots: Leaf Spot Fungus Management; Cottonwood Leaf Drop: Aphids, Borers, or Rust?; Cottonless Cottonwood Leaf Dieback: Likely Rust Disease; Silver Maple Leaf Drop: Maple Petiole Borer, Not Disease; Propagating Drosera capensis from Leaf Cuttings: Correct Method; Why Oak Trees Drop Twig Clumps in Spring

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