I think my bushes got herbicide drifting from my farmer neighbor across the road. My bushes are brown and a few branches are budding but most are not. I broke off a small piece of a branch and it is green in the middle. This gives me hope but what can I do to help the bush survive ? See photo Doris Stowe
There will be not much that can be done for these. You can attempt to flush the soil out with extra water, but this is a risky practice. It can lead to infection. If there is still some life, then I would say way to take any action. If nothing grows back after a month or so, then check and see if there is still any green inside. If not then you can cut it back.