Love hydrangeas, but have especially cold winters? Don't worry; there are winter-hardy hydrangeas that will perfectly suit your space! Hydrangeas that are cold-tolerant include new wood and reblooming varieties that can negate any winter damage with new flower buds the following growing season. Some types of hydrangea shrubs are even able to withstand temperatures as low as -30°F, making them a hardy and reliable addition even in zone 3. Here, we list which types of hydrangeas are cold-tolerant and give tips on winterizing this season.

Panicle hydrangeas (Hydrangea paniculata) and smooth hydrangeas (Hydrangea arborescens) bloom on new wood, meaning they form flower buds on current year's growth during spring and summer. This means no vulnerable flower buds are present on stems during the winter months, making them excellent options for gardeners in colder climates. Keep in mind that panicle and smooth hydrangeas can be more sensitive to waterlogged soil than other hydrangea varieties, so it's essential to plant them in areas with good drainage.

Yes, while bigleaf and mountain hydrangeas are not typically considered cold-tolerant, there are a few varieties that can handle cold temperatures better than others. The Let's Dance series of bigleaf hydrangeas and the Tuff Stuff series of mountain hydrangeas from Proven Winners ColorChoice shrubs will rebloom on both old and new wood along the stem, which means any winter damage should be negated by new wood growth the following spring. Any from this series should be able to handle frigid temperatures and bounce back the following growing season with ease, even in zone 4.

When is the best time to winterize your hydrangeas to optimize for big blooms next season? In cooler climates, it's essential to prepare your shrub in late fall, just a few weeks leading up to the first frost. In warmer clients, some light winterizing, as discussed below, might be necessary at the beginning of November; otherwise, you're good to grow! Remember to keep an eye on the weather report: states with somewhat unpredictable weather, like Michigan, for example, may experience frigid temperatures much earlier than anticipated.

• One Last Watering: Since hydrangeas are water-loving shrubs, it's important to give them one last thorough and deep watering before the ground freezes. When hydrangeas receive a deep watering before winter, their roots can hold on to moisture that will carry them through spring.

• Mulch To Conserve Moisture: Hydrangeas thrive in moist soils, and your shrub must be kept hydrated through the cold and dry winter months. Adding mulch to your hydrangea after thoroughly watering helps retain moisture (and warmth) at the shrub's crown when temperatures drop.

• Covering Your Hydrangeas: Hydrangeas that bloom on old wood may need extra protection on extremely frigid nights (0 degrees Fahrenheit or below). You can easily cover it with burlap or even standard household blankets.