Are Hydrangeas Perennials?
The first kind is short-lived by design and the second kind lasts for years, if not decades.
Small potted hydrangeas that are sold as flowering plants are notperennials.
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As for landscaping hydrangea shrubs, thesecanbe perennials.
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Florist hydrangeas are also grown as annuals.
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However, covering the area around the shrub with 3 to 4 inches ofmulchinsulates the roots against the cold.
Potted hydrangeasneed to be winterized, even if they are hardy in your zone.
Burying the container in the ground soil before the ground freezes is only practical for smaller pots.
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Alternatively, wrap the container (not the plant) with several layers of bubble wrap or burlap.
Tips for Growing Hydrangeas
Why Doesn’t My Hydrangea Bloom?Penn State Extension.
