Wood is a naturally beautiful and durable choice for outdoor dining furniture. Certain extra-hardy varieties withstand weather and regular wear, whether stained with a preservative finish or left free to develop a rustic patina. Acacia, red and white cedar, pine, and oak wood are hard, long-lasting choices at a value price, while teak, though higher priced, is unmatched in its lifetime durability and resistance to rot, insects, and the elements. Eucalyptus is also naturally dense and decay and water-resistant. It is also a renewable resource. Remember to keep untreated wood out of direct sunlight and heavy rain, and clean any kind of wood furniture, painted or not, regularly with a damp cloth.