When selecting wood for a garden bench that can brave the elements year after year, choosing a naturally rot-resistant species is the key to longevity and low maintenance. Your best bets are woods with inherent oils and tannins that repel moisture, insects, and fungal decay.
At the top of the list is Western Red Cedar. Its beautiful reddish hue, straight grain, and delightful aroma are matched by its natural resistance to rot and insects. It's relatively lightweight, easy to work with, and weathers to an elegant silvery-gray if left untreated. For a classic, aromatic, and durable choice, cedar is outstanding.
Teak is the undisputed champion of durability for outdoor furniture. Its high natural oil content makes it supremely water-resistant and incredibly long-lasting. A teak bench is a lifetime investment, often outliving the garden it sits in. While it comes with a premium price, its minimal upkeep and timeless appeal justify the cost for many.
Redwood, particularly the heartwood, offers similar rot resistance to cedar. It's stable, less prone to warping, and has a rich color that grays gracefully. Availability and cost can vary by region, but it remains a premium, eco-conscious option from sustainable forests.
For a more budget-friendly yet highly durable option, consider Pressure-Treated Lumber (like pine or fir). It's not naturally resistant but is infused with preservatives to withstand rot and insects. Modern treatments are safer and effective. It requires sealing or painting for best looks and longevity but offers great value.
Ultimately, the "best" wood balances your budget, desired maintenance level, and aesthetic. Cedar and redwood offer natural beauty with moderate upkeep. Teak provides unparalleled, low-maintenance durability. Pressure-treated wood delivers solid performance at an accessible price point. Whichever you choose, proper construction and occasional care will ensure your garden bench remains a welcoming retreat for decades.