Hydrangeas: Some questions about my first Hydrangea, 0 by MichelleVQuinn

MichelleVQuinn wrote:
Virginia Pesto-

That looks like an Annabelle to me. I have 3 that are doing quite well (Zone 5b, West Michigan) and I have yet to cut them back since we bought this house (2 years). I plan to cut back this year, ever so carefully. Any advice on how to do it, when, precautions,etc, would be greatly appreciated. I would hate to see these guys not do well next spring. The flowers were pure white a few weeks ago and now they are going back to the lime green color they started out at. The attached photo is a pic of a gound layering I did several weeks ago. I "buried" a limb under the large rock and the lighter colored leaves are the new growth. It appears to have taken. I've tried root cuttings with no success.