Our Blanket Flower leaves started getting yellow spots on the leaves a few weeks ago (It is my first year growing them) I did some searching online but could not find any pictures that looked like what I am seeing. I’ve been treating powdery mildew on a plant near them but, this looks different. I wonder if it might be something to do with watering. I typically run the irrigation system at 5am every other day for 20 minutes. I’ve now changed that so that I skip two days between waterings. Thank you in advance for any assistance.