Spots on sage, rosemary and mint plants
I have tan spots on the sage, rosemary and mint plants. It's turning the leaves yellow and looks to be infecting and maybe killing the plants. This is third year in a row. Second year that it has been bad. I'm trying to figure out what it is and how to fix it. Please help! Thank you
This looks like leafhopper damage on the herbs. They are a sucking insect.
Parasitoids and general predators (ants, spiders, ladybugs, lacewings) help to reduce numbers. Keep weeds down especially perennial weeds that may harbor their eggs.
No chemical controls are recommended. It is okay to eat the herbs that do not have a lot of damage. Remove the badly damaged leaves and the plants should put out new growth. Here is general information https://extension.umd.edu/hgic/topics/potato-leafhopper-vegetables about leafhoppers.