Whether your wicker outdoor furniture can brave the winter elements outdoors depends on several crucial factors. Natural wicker furniture should never be left outside during winter months as moisture from rain, snow, and ice will cause the natural fibers to swell, crack, and eventually rot. The freezing and thawing cycles will rapidly deteriorate its structure.
However, modern synthetic wicker (also called resin wicker or all-weather wicker) offers significantly better durability. Made from high-density polyethylene designed to withstand moisture and temperature fluctuations, synthetic wicker can potentially remain outdoors if properly protected. Still, even all-weather wicker benefits from winter protection measures.
For optimal longevity, storing your wicker furniture indoors during winter is always recommended. Use a climate-controlled storage area like a garage, shed, or basement. If indoor storage isn't possible, place furniture in a covered, dry area such as a protected patio or under a sturdy waterproof cover specifically designed for outdoor furniture. Ensure the cover is breathable to prevent moisture buildup that can lead to mold and mildew.
Before storing, thoroughly clean your wicker with mild soap and water, rinse completely, and allow it to dry entirely. Remove all cushions and store them separately in a dry location. For furniture that must remain exposed, elevate pieces off wet ground and use waterproof covers that secure properly against wind. With proper care and protection, your quality wicker furniture can provide many seasons of beautiful outdoor living.