Wicker is a method of weaving that creates structured pieces that are durable, lightweight, and ideal for patio furniture like tables, chairs, and loveseats. However, not all materials used in wicker are good choices for extended periods outdoors. Wicker is traditionally made with natural materials such as willow, reed, and bamboo, and these materials are prone to weather damage. Many natural materials will enjoy better longevity in indoor spaces.
If you are looking for a wicker patio furniture set made from natural materials, consider placing it on a covered deck or porch. Plastic and resin wicker patio furniture are much better suited for full-time use outdoors; their synthetic components are more durable and weather-resistant, and are available in lots of colors.