Iowa State University Plant and Insect Diagnostic Clinic

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• Broadleaf

  • Ash Trees
  • Aspen and Poplar Trees
  • Basswood/Linden
  • Birch Trees
  • Catalpa
  • Cherry, Chokecherry, and Plum Trees
  • Chinese Chestnut
  • Cottonwood
  • Crabapple Trees
  • Hackberry Trees
  • Hawthorn
  • Honey Locust
  • Japanese Tree Lilac
  • Maple Trees
  • Oak Trees
  • Sycamore Trees
  • Walnut and Hickory Trees
  • Willow

• Conifer

  • Arborvitae
  • Balsam Fir
  • Concolor fir
  • Eastern Red Cedar
  • Juniper (Cedar) Trees
  • Pine Trees
  • Spruce Trees
  • Yew

• Elm

  • American Elm
  • Chinese elm
  • Siberian Elm

• Field Crops

  • Corn
  • Soybeans

• Flowers and Herbaceous Plants

  • Azalea
  • Coneflower
  • Geranium
  • Hollyhocks
  • Hostas
  • Peony
  • Rose
  • Spanish thyme

• Fruits and Vegetables

  • Apple
  • Brambles
  • Cucurbits
  • Grapes
  • Peppers
  • Stone Fruits
  • Tomatoes

• Fungi

  • Crimson Cup
  • Lichens
  • Morel
  • Puffball
  • Stinkhorns
  • Sulfur Shelf

• Lawn

  • Turf Grass

• Shrubs

  • Burning Bush (Euonymus)
  • Lilac
  • Wintercreeper (Euonymus)

This information is valid for Iowa. It may or may not apply in your area.

Printing, copying and distributing this information as it originally appeared is permitted.

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