Dahlias Have Brown Spots On Leaves

Question From: D. Harrison - San Diego, California, United States
Q: My dahlia plants has brown spots on the leaves. Can you tell me what is going on with this plant?

A: I believe your dahlias have a fungal disease called Botrytis Blight. Remove the infected leaves, cleaning the blades of your pruners in between cuts and treat with a fungicide. Best And Happy Yardening, Nancy