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Fighting Bumps, Growths And Galls In The Garden

Steve Richey
Galls, often caused by certain insects, are a swelling growth that often appears on the underside of leaves or on branches.

It’s not unusual to see strange bumps and growths on tree branches or leaves. Often, insects are to blame.

On this episode of Talk of Iowa, host Charity Nebbe is joined by entomologist Donald Lewis and horticulturist Richard Jauron to learn how galls impact plant health, and for a look at other common insect concerns in the garden. Lewis and Jauron also answer questions from callers.   


  • Donald Lewis, professor of entomology, Iowa State University
  • Richard Jauron, horticulture specialist, Iowa State University Extension
HorticultureHort DayInsectsEnvironmentHort Day
Katelyn Harrop is a producer for IPR's River to River and Talk of Iowa
Charity Nebbe is the host of IPR's Talk of Iowa