15+ Hydrangea Over Winter Background. As winter temperatures settle in, it's time to protect your endless summer® hydrangeas. Bigleaf hydrangeas primarily bloom on last year's growth, or old wood.
If there is any frost.
Start planting hydrangeas in pots filled with good. If there is any frost. Here are a few things you can do to ensure a season of amazing blooming hydrangeas: Jon from www.rootsnursery.com shows you how to protect your hydrangea buds over the winter.
