Pacific Northwest Plant Disease Management Handbook

Lobelia-Tomato Spotted Wilt

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Latest revision: 
March 2024

Note the necrotic leaf margin and spots on the center leaf due to INSV.

Photo by Stacey Fischer, 1990.

Image related to Lobelia-Tomato Spotted Wilt
Dieback due to Impatiens Necrotic Spot Virus.
Melodie Putnam, 2008.

See:

Greenhouse Plants, Ornamental - Impatiens Necrotic Spot

Symptoms Leaves may develop chlorotic flecks that can look like symptoms of chemical phytotoxicity. The plant also generally dies back. Both Tomato spotted wilt virus (TSWV) and Impatiens necrotic spot virus (INSV) can infect Lobelia.

Pscheidt, J.W., and Ocamb, C.M. (Senior Eds.). 2024 Pacific Northwest Plant Disease Management Handbook.
© Oregon State University.

Use pesticides safely!

  • Wear protective clothing and safety devices as recommended on the label. Bathe or shower after each use.
  • Read the pesticide label—even if you’ve used the pesticide before. Follow closely the instructions on the label (and any other directions you have).
  • Be cautious when you apply pesticides. Know your legal responsibility as a pesticide applicator. You may be liable for injury or damage resulting from pesticide use.

Trade-name products and services are mentioned as illustrations only. This does not mean that the participating Extension Services endorse these products and services or that they intend to discriminate against products and services not mentioned.

H - Home garden packaging commonly available.     O - Acceptable in organic production.