Weeping Cherry and Coppertina White Fuzz: Scale or Mealybugs—Systemic Insecticide Needed

Identifying the White Fuzzy Stuff

White fuzz on bark and leaves of snow fountain cherry and coppertina (ninebark) is likely scale insects (e.g., cottony maple scale) or mealybugs. Both suck sap, excrete honeydew, and weaken plants.

Why Systemic Insecticide?

• Contact sprays can't penetrate waxy coatings.
• Systemics (imidacloprid, dinotefuran) move through sap—ingested by feeding insects.
• Applied as soil drench—easy, season-long control.

Application Timing

Early spring (before bud break) or when crawlers (mobile nymphs) are active. Check label for pollinator precautions.

Support Plant Health

• Water during drought.
• Mulch, fertilize lightly.
• Monitor for ants farming honeydew—control ants to help predators.