Plant infestation - Ask Extension
Hello, I would like advice on the cause and treatment of yellow spots appearing on my lavender p, gladiolus, and daisy plants in my garden. There is n...
Knowledgebase
Plant infestation #871063
Asked June 01, 2024, 3:08 PM EDT
Hello, I would like advice on the cause and treatment of yellow spots appearing on my lavender p, gladiolus, and daisy plants in my garden. There is no evidence of infestation on my irises that are near by. The lavender plant has curled leaves and does not look healthy, but did bloom. There was a few black with yellow striped winged beetles in the plant, and a few tiny red beetles as well. Wondering if you could give guidance on how to save the lavender, and prevent spread to my other perennials? Thanks
Kent County Michigan
Expert Response
Your plants have an infestation of cucumber beetles. The cucumber beetle can be controlled with Horticultural soap or Neem Oil. Insecticides are another option, using an insecticide registered for use on cucumber beetles. If using an insecticide be sure to read and follow all instructions printed on the label.
More information on cucumber beetles can be found in this article: Cucumber beetles in home gardens | UMN Extension
Thank you for your question and have a great gardening experience.
