Cold Climate Hydrangea

Gardening Tip for Gardeners in Colder Zones

Most Hydrangea macrophylla varieties flower on old wood, and so must carry their flower buds through the winter. Early or late freezes may damage flower buds, resulting in fewer blooms, or none at all, the following spring and summer depending on the severity of the winter. For example, in Zone 5, bloom may only succeed 3 years out of 5 but the plant itself is hardy there. Fortunately for gardeners in colder zones, recent introductions will bloom for them, as they flower on new growth as well as year-old stems, so blooms are guaranteed even after a cold winter. Please click here for varieties that bloom on both old and new wood.

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