Hydrangeas are a popular choice for gardens and landscapes due to their stunning blooms and ability to thrive in various climates. However, when it comes to winter hardiness, not all hydrangeas are created equal.
Paniculata and smoothleaf hydrangeas are generally very cold hardy. These varieties, such as the popular ‘Limelight’ and ‘Annabelle’, can withstand harsh winter conditions without the need for additional protection. I have personally grown paniculata hydrangeas in my garden and they have always survived even the coldest winters without any issues.
Oakleaf hydrangeas, as the name suggests, have leaves that resemble those of oak trees. These hydrangeas are also quite winter hardy and can tolerate freezing temperatures without much trouble. I have a couple of oakleaf hydrangeas in my landscape and they have always bounced back beautifully in the spring, even after a particularly harsh winter.
Climbing hydrangeas, another variety that is known for its winter hardiness, are able to withstand cold temperatures and even harsh winds. These hydrangeas are excellent for covering walls, fences, or trellises, and they can add a beautiful touch to your landscape during the winter months. I have seen climbing hydrangeas growing in colder regions, and they always impress with their ability to withstand even the harshest winters.
On the other hand, macrophylla hydrangeas, also known as mophead or lacecap hydrangeas, are not as winter hardy as the previously mentioned varieties. These hydrangeas often struggle in colder climates and may require some additional protection to survive the winter. In my experience, macrophylla hydrangeas can be quite sensitive to freezing temperatures, and without proper care, their flower buds may be damaged or killed during winter.
To provide winter protection for macrophylla hydrangeas, consider the following tips:
1. Mulch: Apply a layer of mulch around the base of the plant to insulate the roots and help retain moisture. This will also provide some protection against temperature fluctuations.
2. Windbreak: If your macrophylla hydrangeas are exposed to strong winds, consider creating a windbreak using burlap or other materials. This will help protect the plants from drying out and suffering from windburn.
3. Covering: In areas with extremely cold winters, you may need to cover your macrophylla hydrangeas with burlap or frost cloth. This can help protect the plant from freezing temperatures and harsh winds. Just make sure to remove the coverings once the worst of the winter has passed to prevent moisture buildup and potential disease issues.
4. Pruning: Avoid heavy pruning of macrophylla hydrangeas in late fall or winter, as this can remove potential flower buds for the following year. It’s best to prune them in late winter or early spring, once the risk of frost has passed.
While some hydrangea varieties are naturally winter hardy, others may require a little extra care to survive the cold months. By selecting the appropriate hydrangea varieties for your climate and providing necessary protection, you can enjoy the beauty of hydrangeas in your garden year after year.
