Lilies, particularly the frost tolerant Asiatic hybrids, are incredibly resilient plants that can withstand extremely cold temperatures. These varieties can tolerate temperatures as low as -35F (-37C), which is quite impressive. I have personally witnessed these lilies thriving in regions with harsh winter climates, where temperatures often drop to these levels.
However, it’s important to note that not all lilies have the same level of cold tolerance. While the Asiatic hybrids can handle such extreme cold, taller Oriental lilies and their hybrids have a slightly lower cold tolerance, able to withstand temperatures down to -25F (-32C). Despite this difference, both types of lilies can still be grown successfully in regions with cold winters, as long as certain conditions are met.
One crucial factor for successfully growing lilies in cold climates is excellent drainage. Lilies prefer well-draining soil, as excessive moisture can lead to rot and other issues, especially during winter. Proper drainage ensures that excess water doesn’t accumulate around the roots of the lilies, which can be detrimental to their overall health and survival. In my own garden, I have made sure to amend the soil with organic matter and create raised beds to ensure adequate drainage for my lilies.
Additionally, it’s important to provide some protection for lilies during the winter months. Applying a layer of mulch around the base of the plants can help insulate the soil and provide some extra protection against the cold. I usually use a layer of straw or shredded leaves to mulch my lilies, making sure to avoid piling it directly on top of the plants. This mulch layer acts as a barrier, helping to regulate soil temperature and prevent extreme fluctuations that could harm the lilies’ roots.
In regions with particularly severe winters, additional measures can be taken to protect lilies. For example, covering the lilies with a layer of burlap or frost cloth can shield them from the harshest cold and wind. This can be especially beneficial for taller lilies, as their exposed stems and blooms are more susceptible to damage. I have employed this method during extremely cold spells, and it has helped my lilies survive even in sub-zero temperatures.
While lilies are generally hardy plants, it’s important to keep an eye out for any signs of stress or damage during the winter. If any parts of the plants appear wilted, discolored, or mushy, it’s crucial to take action promptly. Pruning away any damaged or diseased parts and providing proper care can help the lilies recover.
Lilies are remarkably resilient plants that can tolerate cold temperatures, with frost tolerant Asiatic hybrids being able to handle -35F (-37C), and taller Oriental lilies and hybrids being hardy to -25F (-32C). By ensuring excellent drainage, providing some winter protection, and monitoring their condition, lilies can be successfully grown in regions with harsh winter climates. I have personally enjoyed the beauty of lilies in my own garden, even in the face of freezing temperatures, thanks to these strategies.
