GuideOutdoor Furniture
Build a Potting Bench with a Lower Shelf
Potting up seedlings on the ground or a garden table is hard on the back and messy. A potting bench gives you a work surface at the right height, somewhere to keep compost and pots underneath and a rail for the tools you always need.
What you will build
The bench is a sturdy frame of four legs with two levels: a slatted top at working height and a slatted shelf near the ground. A rail across the back of the top stops soil and pots sliding off and holds hooks for trowels and scissors.
A good working height for standing work is roughly where your hands rest with elbows bent, often around 36 in (90 cm). Measure yourself before cutting the legs: the right height makes far more difference than any other detail.
Real-world examples
Photos of similar builds by other people, shared under open licenses. They show the idea in practice; the details differ from this guide.
Materials
- 4 legs 2 × 4 in (45 × 95 mm), cut to your working height
- 2 × 4 in lumber for the frame rails at top and shelf level, about 24 ft (7.3 m) total
- Decking boards or 1 × 4 in (20 × 95 mm) boards for the top and shelf slats
- A board about 1 × 6 in (20 × 145 mm) for the back rail
- Exterior screws 1½ and 2½ in (40 and 63 mm)
- Screw-in hooks for tools
- Exterior oil or stain
Tools
- Tape measure, square and pencil
- Mitre saw or circular saw
- Drill/driver
- Clamps
- Spirit level
- Sander
- Safety glasses
Step by step
1Find your working height
Stand straight with your arms relaxed and elbows bent to about 90 degrees, and measure from the ground to just below your hands. That is roughly the height of the finished top. Subtract the thickness of the top boards to get the leg length.
2Build two end frames
For each end, join two legs with a short rail at the top and another about 8 in (20 cm) above the ground for the shelf. Screw through pilot holes and check the frames are square.
3Connect the ends with long rails
Stand the end frames up and join them with long rails front and back at both levels. You now have a rigid box frame with support for the top and the shelf. Check that the top rails are level.
4Lay the top slats
Screw the top boards across the frame with gaps of about ¼ in (6 mm) so spilled soil and water fall through. Let the top overhang the front a little; it is more comfortable to work at.
5Lay the shelf
Screw boards across the lower rails in the same way. The shelf will carry heavy bags of compost, so add a centre support if the span is more than about 3 ft (90 cm).
6Add the back rail and hooks
Screw the wide board upright along the back of the top so it stands a few inches higher. Fit hooks along it for hand tools, and finish the whole bench with exterior oil or stain.
7Level it in place
Move the bench to its spot and check the top with a level from side to side and front to back. On uneven paving or soil, put a flat paver or a small offcut of treated wood under the short legs rather than cutting them, so you can adjust it again later if the ground settles.
Tips for a better result
- Put the bench in a sheltered spot near the water tap and compost, so everything is within reach.
- A plastic tub that fits on the top makes a tidy space for mixing compost.
- Keep the shelf for heavy items and the top clear for work.
- Wheels on two legs make the bench easy to move, but choose ones that lock.
Common mistakes to avoid
- Building the bench at kitchen-counter height without checking it suits you.
- Leaving no gaps in the top, so it stays wet and dirty.
- Skipping the long rails, so the bench racks under load.
- Placing it in full sun where you will not want to work on summer afternoons.
Safety
- Wear safety glasses when cutting and drilling.
- Store garden chemicals in a locked cabinet, not on an open bench where children can reach them.
- Wear gloves when handling compost and potting mix, and avoid breathing the dust from dry mixes.
General guidance only. Follow the instructions for your tools and materials and your local rules, and use a qualified professional for electrical, gas and structural work.
Finishing up
A potting bench quickly becomes the busiest spot in the garden in spring. Keep a brush on a hook to sweep the top after each session, re-oil the wood each year, and it will stay a pleasant place to work.
About this guide: written by the DIY Outdoor Builds editors from general, widely used building and gardening practice. Text and illustration © DIY Outdoor Builds. Photos are by the people credited under each one, used under their licenses. Found an error? Let us know.
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