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Poplar Copper Nails & Fir Topping: Stop Deep Fertilizing, No Wound Paint

Poplars hit with copper nails 2.5 yrs ago, deep-fertilized 4×/yr. If canopy full, stop deep feeds. Switch to 10-10-10 granular at 1 lb/inch trunk diameter early spring. Leaf spots cosmetic.

Topped Firs

No wound paint—slows healing. Fir tops may resprout from side branch (crooked trunk) or die. Conifer topping is risky.

Trees: Systemic Insecticide for Scale on Yellow Poplar: Bayer Advanced Tree & Shrub; Poplar Trees Covered in Sticky Spray: Aphid Honeydew; Dying Poplar Trees: Cytospora Canker Diagnosis and Management; Dying Poplar After Root Damage from Retaining Wall Construction; Tulip Poplar (Liriodendron) Suitability for South Central Kansas; Tulip Poplar Aphid Honeydew: Systemic Treatment for Large Trees; Poplar Leaf Spot: Fungus, Not Insects—Sanitation + Fungicide; Killing Poplars for Firewood: Hack-and-Squirt, Wipe Sprouts; Poplar Tree Species Found in South Carolina; History of the Tulip Poplar in America

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