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Holly Leaf Spot: Fungicide Too Late Now, Plan for Spring

Why Fungicide Failed

Black/yellow leaves with spots = leaf spot. Once spots visible, fungus has finished damage. Spraying now does nothing.

Correct Timing

Fertilize this spring for new growth.
Next spring: spray fungicide before buds open (preventive).

Shrubs: Variegated Holly Losing Lower Leaves: Scale and Chlorotic Shoots; Holly Sooty Mold and Leaf Drop: Insect-Driven Dual Symptom; Holly Black Leaves: Sooty Mold from Scale or Aphids; Camellia Sooty Mold in Belgium: Same Cause, Same Cure; Holly Hedge Sooty Mold: Aphids on North Side; Gardenia Pests: Aphids, Sooty Mold, and Treatment; Holly Leaf Miner Control: Systemic Insecticide Timing and Life Cycle; Holly Bush Dying: Scale Insects or Winter Injury; Treating Blackened Holly Leaves: Leaf Blight vs. Tar Spot; Snowball Bush Leaf Spot: Fungicide Timing and Cultural Care

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