As a gardening and landscaping expert, I can provide a detailed answer to the question of whether boxwoods need to be covered during freeze. Boxwoods are generally considered hardy plants, which means they can withstand colder temperatures and winter conditions. However, there are certain circumstances when it may be necessary to protect them with burlap or other coverings.
1. Plant Hardiness: Boxwoods are known for their ability to tolerate cold temperatures, especially the common boxwood (Buxus sempervirens). They are hardy to USDA zones 5-8, which means they can survive winter temperatures as low as -20°F (-29°C) to 20°F (-6°C). If you live in a region within this range, your boxwoods should be able to withstand winter without any additional protection.
2. Sunlight and Exposure: Boxwoods thrive in partial to full sun, but they can also tolerate some shade. It’s important to consider the specific conditions in your garden when determining if they need protection during freeze. If your boxwoods are exposed to harsh winds or extreme cold due to their location, such as being situated in an open field, then covering them with burlap can provide some protection from the elements.
3. Proper Planting: Ensuring that your boxwoods are planted properly can also contribute to their ability to withstand freeze. Plant them in well-draining soil to prevent waterlogging, which can lead to root rot during freezing temperatures. Additionally, proper spacing between plants allows for good air circulation, reducing the risk of fungal diseases that can be more prevalent in damp, cold conditions.
4. Well Care: Proper care throughout the year can also enhance the winter hardiness of your boxwoods. Regular watering during dry periods in fall helps to keep the plants hydrated before winter sets in. Avoid heavy pruning in late summer or fall, as this can stimulate new growth that is more susceptible to winter damage. Applying a layer of mulch around the base of the plants helps to insulate the roots and maintain soil moisture.
While boxwoods are generally hardy, there are situations where additional protection may be warranted. For example:
– Newly Planted Boxwoods: If you have recently planted boxwoods, they may have weaker root systems and may benefit from some winter protection during their establishment phase. Wrapping them with burlap or covering them with a breathable fabric can help shield them from harsh winter conditions until their roots become better established.
– Severe Winter Conditions: In areas that experience particularly harsh winters, with extreme cold temperatures and heavy snowfall, you may consider covering your boxwoods to provide some extra insulation. This is especially true for boxwoods in containers or those located in exposed areas where they are more vulnerable to freezing winds.
While boxwoods are generally hardy and can withstand winter conditions, there are certain circumstances when providing them with some protection during freeze can be beneficial. Assess the specific conditions in your garden, consider the hardiness of the boxwood variety, and take appropriate measures to ensure their winter survival.
