Aphids on River Birch: Identification and Systemic Control

My young river birch has "eggs" all over lower leaves. What are they? Will the tree survive?

Likely Aphids, Not Eggs

The "eggs" are probably live aphids—green, round, soft-bodied, clustering on leaf undersides. Key ID traits:

Not fatal. Established trees tolerate aphids well. Young trees may suffer reduced growth if heavily infested.

Systemic soil drench: Imidacloprid (Bayer Advanced Tree & Shrub)

Your birch will recover fully with treatment.

Plant Diseases: Velvet Galls on River Birch: Mite Damage, No Treatment Needed; River Birch Aphids: Minor Pest, Easy Systemic Control; Beech Blight Aphids on Large Maple: Systemic Soil Treatment; New River Birch Trees Slow to Leaf Out: Water, Don't Fertilize; Birch Defoliation by Caterpillars: To Spray or Not?; River Birch Near a Pool: Root Concerns & Construction Tips; River Birch Defoliated by Caterpillars: Identify, Spray Now, Prevent Next Year; Reviving a Wilted New River Birch; River Birch Near Driveway/Foundation: Use Dwarf Cultivar; River Birch (Betula nigra): The Four-Season Star for Difficult Sites

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