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Hackberry Woolly Aphids Swarm Middle Tennessee, Leaving Sticky Film on Cars and Decks

Experts link the fall surge to an extended warm season that lets the invasive insects reproduce longer.

Overview

  • Local entomologists confirm the floating white flecks are hackberry woolly aphids feeding on hackberry tree sap and coating surfaces with honeydew.
  • Residents across the Nashville area report vehicles, porches and clothing smeared with sticky residue as swarms lift off infested branches.
  • Tennessee State University warns heavy activity can complicate nursery shipments because aphids land on plants bound for out-of-state markets.
  • For severe infestations, systemic insecticides that move through plant tissues can control the pests, though treatments can be costly for homeowners.
  • The species is native to Asia and was first documented in North America in 1996 in Georgia, and numbers typically ease once cooler weather arrives.