Greenhouse Foundations: Gravel, Concrete, or Piers

Most backyard greenhouses need a level, raised gravel base, while glass, large, or permanent structures may require concrete, piers, or a knee wall.
Plan a small backyard greenhouse that fits your space, budget, and growing goals. Explore site selection, greenhouse dimensions, foundations, layouts, materials, and practical setup advice before you build or buy.

Most backyard greenhouses need a level, raised gravel base, while glass, large, or permanent structures may require concrete, piers, or a knee wall.