Gardener’s Supply Sustainable Raised Beds
Choose a composite bed made with recycled plastic and reclaimed sawdust, held by aluminum corners. Two footprints provide a low, open-bottom growing space.
For a composite garden bed
The bottom is open to the soil below. Choose a ground location with drainage, or use a contained planter for a patio.
Choose the size or layout
Use the widest outside footprint to plan paths. For a soil order, measure between the inside walls after assembly and choose your filled depth; advertised dimensions can be rounded. Rectangular sizes below read length × width × height.
Scroll across the table to compare all measurements and plan a size.
| Size / arrangement | Advertised dimensions | Documented outside footprint | Inside dimensions | Planting depth | Listed capacity | Plan |
|---|---|---|---|---|---|---|
| 3 × 3 ft | 36 × 36 × 10.5 in | Measure after assemblySize source · 2026-09-07 | Measure after assembly | 10.5 in | 235 dry qt | Plan this size |
| 3 × 6 ft | 72 × 36 × 10.5 in | Measure after assemblySize source · 2026-09-07 | Measure after assembly | 10.5 in | 470 dry qt | Plan this size |
Prepare and assemble this bed
Compare the material, bottom and care choices if you are still deciding between families. Follow the site preparation and liner checklist for the supporting surface.
- Choose the exact configuration and lay out its parts. Check the required tools in the selected kit instructions.
- Prepare a stable, level position and confirm the outside footprint with working paths.
- Check corners, fasteners, protective edging and any layout-specific braces against the kit instructions before adding fill.
- Measure the finished inside and outside separately, then update your plan. Preserve the maker’s fill restrictions.
Mark the outside footprint on the ground before assembly, including any legs or protruding corners. Leave a route for carrying bags, reaching the plants and maintaining nearby beds.
This bed is open to the ground. Check the soil and drainage where it will sit before adding fill. Its wall height is not a prescription for how deep the growing mix should be.