new to gardening
I don't know much about herbs but I do know not to water plants while the sun is beating down on them. We always water one time in the evening when the sun goes down to prevent the water burning the leaves. Also over watering can be a bad thing. Maybe try partial shade for the plants? Could be a fungus also. Here is a link to diseases for herbs. http://www.offthegridnews.com/survival-gardening-2/recognizing-diseases-common-to-herbs/ Hope this helps. Good luck!
Edited by Dipsey - 6/19/16 at 8:07pm