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