Trees that Struggle in the Canadian Winter

Canada's diverse climate, marked by harsh winter conditions, poses a challenge for many tree species. While some trees in the Great White North thrive in the cold, others face considerable struggle during the long, frigid months. This article explores trees that find it challenging to endure the Canadian winter, shedding light on their vulnerabilities and offering insights into how homeowners and arborists can support their survival. It's important to contact an arborist near you when you need winter tree care to take care of your trees. 

Southern Transplants

Many tree species native to warmer climates, particularly those from the southern United States or other temperate regions, may struggle in the Canadian winter. Species like magnolias, southern dogwoods, and certain varieties of palms may experience stress and damage when exposed to Canada's cold temperatures, heavy snowfall, and icy conditions.

Broadleaf Evergreens

Broadleaf evergreens, such as rhododendrons and azaleas, can face difficulties in the Canadian winter. The combination of freezing temperatures and fluctuating moisture levels can lead to desiccation, where the leaves lose moisture faster than the roots can absorb it. This can result in winter burn, browning of the foliage, and diminished overall health.

Late Bloomers

Trees that bloom late in the growing season may struggle to complete their growth cycle before the onset of winter. Species like the Southern Catalpa or some varieties of flowering cherries might not have sufficient time to fully harden off their new growth, leaving them vulnerable to winter damage.

Inadequately Cold-Hardy Species

Certain tree species, while technically able to survive in Canadian zones, may struggle if not appropriately cold-hardy. Insufficient cold hardiness can lead to frost cracking, where the rapid contraction and expansion of tissues in freezing and thawing conditions cause the bark to split.

Moisture-Loving Trees

Trees that thrive in consistently moist conditions may face difficulties in Canadian winters due to fluctuating moisture levels and the potential for frozen soil. Willows, for instance, may experience challenges as their water sources freeze, impacting their ability to absorb essential nutrients.

Protect Vulnerable Trees

There are a number of things you can do to help protect these vulnerable trees. Following these winter tree care tips can go a long way to keeping your trees healthy over winter. 

• Choose Cold-Hardy Species - When planning landscaping or planting new trees, opt for species that are well-suited to the specific hardiness zone of your region.
• Apply Mulch - Mulching around the base of vulnerable trees helps regulate soil temperature, retain moisture, and protect roots from extreme temperature fluctuations.
• Watering in Late Fall - Providing adequate water to trees in late fall before the ground freezes helps them enter winter well-hydrated, reducing the risk of winter burn.
• Winter Wrapping - Wrapping young or vulnerable trees with burlap in late fall can provide an additional layer of protection against harsh winter winds and frost.

Contact An Arborist About Winter Tree Care

Understanding the trees that struggle in the Canadian winter is crucial for homeowners, arborists, and landscapers alike. By selecting cold-hardy species, employing protective measures, and promoting overall tree health, it's possible to mitigate the challenges these trees face during the winter months. In doing so, we contribute to the resilience and longevity of our urban forests while ensuring the beauty and biodiversity of Canada's landscapes endure through the changing seasons. If you need help with your trees this winter in Newmarket, Aurora, Markham, or anywhere in the York Region don’t hesitate to contact us at Sequoia TreeScape. We are the most trusted arborist near you, only one call away at (416) 770-8733.