This is a common question for garden lovers as winter approaches. The short answer is: yes, you *can* typically leave high-quality, all-weather resin garden benches outside all winter. Resin is renowned for its durability and resistance to rot, rust, and insects. However, "can" doesn't always mean "should" without some precautions.
Leaving your bench outside exposes it to freezing temperatures, snow, ice, and winter sun. While resin won't crack like cheap plastic, extreme and repeated freeze-thaw cycles can cause stress over many years. Prolonged moisture pooling can potentially lead to mildew on the surface.
For the best longevity, a little preparation is wise. A simple protective cover is the easiest solution. It shields the bench from UV fading, prevents water and ice from sitting directly on the seat, and keeps it cleaner. If possible, moving the bench to a more sheltered spot, like under a porch eaves or against the house, also helps. Giving it a good clean before winter removes dirt that can trap moisture.
Storing it in a garage or shed is, of course, the optimal protection and will significantly extend its pristine appearance. But for most homeowners, that's not always practical.
Ultimately, your decision depends on your climate and your bench's quality. In mild winters, leaving it covered is perfectly fine. In harsh, snowy regions, storage is advisable if you want to minimize any wear. Either way, proper care ensures your resin bench will be ready and beautiful for many springs to come.