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Fall Leaf Color Depends on Weather, Not Fertilizer

Dull fall color is due to weather patterns, not nutrient deficiency. Fertilizer won't brighten autumn leaves. See "Fall Color in the Forest and Landscape" for the science.

About Gardening: Dieffenbachia Leaf Drop: Root Stress from Water or Light; Winter Lemon Tree Leaf Drop: Underwatering in Bloom; Maple Summer Leaf Color: Red Cultivar, Not Stress; Why Do Autumn Leaves Change Color? The Science of Fall Foliage; Tomato Leaf Miners: Identification and Integrated Management; Peace Lily Leaf Spots: Diagnosing and Correcting Cultural Issues; Reverting Variegation on 'Butterfly' Japanese Maple; Cercospora Leaf Spot on Cherrylaurel: Shade and Moisture Issues; Identifying and Controlling Boxwood Leaf Miner; Fall Leaf Color: Weather Trumps Fertilizer

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