Should I prune my Nikko Blue hydrangeas now?
Only one bloom this past summer! We had a frost so the leggy stalks and leaves are wilted. Adjacent oak leaf and climbing hydrangeas bloomed beautifully...
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This particular hydrangea is one of the macrophylla species. These will flower on old wood, so this can be a chore to keep it alive to flower. This article will explain a little more in detail: https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/hydrangea-not-blooming.htm