White fluffy insects on elm/maple in May are woolly alder aphids. They excrete honeydew, causing sticky surfaces and black sooty mold. Control: blast small trees with hose or insecticidal soap. Large trees: imidacloprid soil drench (Bayer Advanced), then water well.
Selling Loquat Seedlings: Timing, Hardiness, and Fruiting Expectations
Utilizing Tree Tops After Logging
Willow Tree Encroachment and Property Line Liability
Managing Borers in Japanese Maples: Systemic Insecticides and Tree Health
Transplanting Large Thuja (Arborvitae): Pro Equipment Needed
Growing Catawba Trees from Seed Pods: What You Need to Know
Controlling Aphid Honeydew on Elm Trees with Systemic Insecticides
Diagnosing Pencil Holly Decline: Watering and Root Rot
Mimosa Tree Identification and Saving a Stressed Dogwood
Pruning Needled Evergreens: Leave Green Growth Behind Every Cut
Giant Willow Aphid Control on Large Trees
Damaged Trees Require Certified Arborist Evaluation
Woolly Apple Aphid: Root and Bark Feeder Requiring Dual Treatment
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