Hello, I have had a limelight hydrangea in my front yard for about 3 years now. This year I noticed that it's leaves are looking discolored. Some of them are turning a lime green shade with the veins in a darker green. Some leaves have rust colored spots. I have pictures that I can send, too.

I love this plant and want to help it if it's getting sick. Last year the neighbor dug nearby and poured a concrete base for an iron fence post. Could this be part of the problem?

Thanks, Jessica Horning

The bright green color with darker veins sounds very much like iron chlorosis. Chlorosis is due to a lack of iron because the soil pH is too high. The concrete base of the fence post shouldn't be the problem. But if there is gravel nearby or limestone of some type this could be the issue. Using some type of chelated iron will help remedy the problem and is available at most garden centers. The brown spots could be due to many things. Sometimes there is a necrosis associated with chlorosis but it shows up when the chlorosis is quite severe and usually not spots. With all the ample moisture this season they could be due to disease. Spray would not be warranted but consider raking up the leaves around the plant at the end of the season for sanitation.