Hello: Last summer we had our roof cleaned of algae and other gunk and the runoff from the chemicals in the roof damaged my old azaleas. I watered like crazy but about a third of the azaleas died back. I cut out all the dead wood this spring and the rest of the bush is looking fairly good. I mulched with leaf compost. I wondered if I should fertilize but I'm hesitant to do that because of the heavy chemical load already in the soil from the sodium hypochlorite. Your thoughts? How should I best care for my beautiful plants? Many thanks. Pat