cold hardy hydrangeas

  • hydrangea

    Winter-Hardy Hydrangeas

    If you haven’t noticed, there are suddenly more hydrangeas (Hydrangea spp. and cvs., Zones 3–9) for northern gardeners than ever before. If you've become frustrated with getting a hydrangea to…

  • Hydrangea macrophylla 'Nikko Blue'

    How to Get Big Flowers from Bigleaf Hydrangeas

    The right mix of light, nutrients, and water, plus winter protection can ensure abundant blooms