That's an excellent and very practical question! The answer isn't a simple yes or no—it depends heavily on the bench's material, your local climate, and how permanent you want the installation to be. Let's break it down.
For most lightweight benches, like those made from resin or lightweight metal, placing them directly on firm, level ground is often perfectly fine. The key is ensuring the ground is stable and won't become muddy or sink. A level patio, a compacted gravel area, or a firm patch of lawn usually works.
However, for heavy benches (solid wood, stone, or concrete) or in areas with frost, strong winds, or uneven terrain, a foundation is highly recommended. A simple foundation can be as easy as setting concrete pavers or patio slabs under the bench legs to distribute weight and prevent sinking. For a permanent, "forever" installation, especially with masonry benches, pouring concrete footings below the frost line is the gold standard. This prevents heaving from freeze-thaw cycles.
So, while you *can* place many benches directly on the ground, taking a little time to prepare a solid, level base—whether it's compacted gravel, pavers, or concrete—will ensure your bench stays stable, level, and beautiful for many more years to come. It’s the secret to avoiding wobbles, sinks, and premature wear.