Whether you can leave your wicker outdoor furniture outside all winter depends heavily on one crucial factor: is it made from natural or synthetic materials? Natural wicker, crafted from materials like rattan, bamboo, or willow, is highly vulnerable to winter's harsh elements. Moisture from rain and snow can cause it to swell, warp, and become brittle. Subsequent freezing temperatures exacerbate this damage, leading to cracking and splitting. Furthermore, mold and mildew thrive in damp conditions, leading to unsightly stains and rot. For natural wicker, indoor storage is non-negotiable for its survival.
In contrast, synthetic or all-weather wicker, typically made from resin or vinyl, is engineered to withstand the outdoors. It is resistant to moisture and won't rust or rot like metal or natural fibers. While it is durable enough to be left outside, taking protective measures will significantly extend its lifespan and keep it looking new. The most effective step is to use high-quality, breathable, waterproof furniture covers. These covers shield the wicker from UV rays, dirt, and the weight of snow and ice, which can still cause structural sagging over time.
For optimal protection of any wicker furniture, a dry, covered storage space like a garage, shed, or basement is always the best solution. Before storing, clean the furniture thoroughly with a mild soap solution and allow it to dry completely to prevent mildew growth. If you must leave synthetic wicker outside, place it in a sheltered area, such as under a covered patio or against a weather-protected wall. Elevating the furniture on pads can also prevent water pooling and frost heave damage. Ultimately, storing natural wicker is essential, while protecting synthetic wicker with covers is highly recommended to ensure your furniture is ready and beautiful for the spring season.