That's a great question, and one many shoppers ask before buying outdoor furniture! The honest answer is: it depends. Most garden benches you order online or find in large retail stores are *not* pre-assembled. They typically arrive in a flat-pack box to reduce shipping costs, prevent damage, and make handling easier. You'll likely need to assemble the legs, backrest, and possibly the seat slats yourself using the provided tools and instructions.
However, there are exceptions. Some higher-end or specialty retailers may offer fully assembled or "ready-to-assemble" options, sometimes for an additional delivery fee. Also, very simple, one-piece bench designs (like some solid stone or concrete styles) might come as a single unit.
My advice? Always check the product description before you buy. Look for terms like "requires assembly," "flat-pack," or "ready-to-use." If you're not handy with tools, factor in the setup time or consider hiring a helper. A little assembly is often worth it for a beautiful, sturdy bench that will last for seasons to come!