Oh, dear! Hello, my friend. I'm reaching out because I noticed some black spots on the peonies I planted. Do you think you could help me figure out what to do? Thanks so much. I'd love to know what I can do to help!
Most of the black spots are caused by fungal diseases, such as Botrytis blight or Phytophthora blight. You can help it with proper care, such as providing good sanitation, proper planting, and giving your peonies fungicide treatment.
I think the humidity might not be quite right for it. It would be great if you could keep the humidity at about 40% to 70%.