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How much to cut back your hydrangea depends on the variety of hydrangea you have, and where you live. In northern climates "Annabelle" and "pee gee" hydrangeas can be cut back to eight inches, and still produce a three foot-high shrub with flowers during the summer. "Mophead", "Lacecap" and "oakleaf" hydrangeas set their blooms in late August, September or October, so you have to prune them in early August to be sure you aren't cutting off next year's blooms. Prune out up to a third of the stems of an older plant to encourage new growth. Prune those stems to the ground. Otherwise it usually isn't necessary to prune them at all. Just cut off the spent flowers (deadhead) down to the next stem or mature leaf.

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Do hydrangea comes back every year?

Yes, hydrangeas can come back every year, depending on the variety and climate. Some types, like the smooth hydrangea (Hydrangea arborescens) and panicle hydrangea (Hydrangea paniculata), are known for their hardiness and typically return each spring. However, others, like the bigleaf hydrangea (Hydrangea macrophylla), may require protection in colder climates and can be more susceptible to winter damage. Proper care and suitable growing conditions help ensure their return each year.


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To protect next year's growth, cut hydrangea blooms in the fall only if you're dealing with spent flowers on certain varieties, like the smooth hydrangea (Hydrangea arborescens) or the panicle hydrangea (Hydrangea paniculata). Make cuts just above the first set of healthy buds on the stem, typically around 12-18 inches from the ground. Avoid cutting the older wood on varieties like bigleaf hydrangeas (Hydrangea macrophylla), as they bloom on old wood and cutting them back can reduce flowering the next season. Always use clean, sharp tools to make clean cuts and reduce the risk of disease.


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