Materials
Elevated Raised Garden Beds
An elevated raised garden bed lifts the soil to waist height on legs or a stand, so you can plant and weed without bending. Aim for a rim about 30 to 36 in high, with 8 to 12 in of soil.
| Who it's for | Rim height | Bed depth (front to back) | Notes |
|---|---|---|---|
| Standing, average height | 30–36 in | Up to 2 ft from one side | Measure to your hip bone |
| Seated on a stool or bench | 24–28 in | About 2 ft | Leave room for feet |
| Wheelchair user | 24–30 in | 20–24 in | Table style with knee space underneath |
| Children | 18–24 in | About 18 in | Pairs well with a step stool for adults |
Who elevated beds suit
Elevated beds, sometimes called table beds or planter boxes on legs, sit on a frame so the soil never touches the ground. They are a good fit for:
- Anyone with a sore back, hips or knees. No kneeling, no deep bending.
- Wheelchair users, when built table style with open space underneath.
- Patios, decks and balconies, where there's no open ground to dig into.
- Yards with pests like rabbits, voles or slugs, which have a much harder climb.
- Renters, since most elevated beds can be moved when empty.
The trade-off is size. An elevated bed holds much less soil than a ground-level bed, so it suits a kitchen herb and salad garden better than a big vegetable plot. If you want a full-size bed that is still easier on your back, a tall bed sitting on the ground, 24 to 32 in high, is another route. Our guide to choosing a raised bed compares the options.
Best height for comfortable gardening
For standing work, the rim should land near your hip bone. For most adults that's 30 to 36 in. A quick test: stand next to a counter or table at that height and pretend to pull weeds for a minute. If your shoulders hunch, go lower; if you bend at the waist, go higher.
For seated gardeners, the planting surface should sit around elbow height when seated, usually 24 to 30 in from the ground. Wheelchair users need clear knee space under the box, about 27 in high, so the person can roll right up to the edge. Keep the growing area no more than 20 to 24 in from front to back, since reach is shorter from a seated position.
If the bed is reachable from both sides, it can be wider, but 2 to 3 ft is plenty for most elevated designs. Many raised garden bed kits come in standard 30-in heights; check the leg length before you buy.
Soil depth and weight
Elevated beds trade depth for height. Most hold 8 to 12 in of soil, which is enough for lettuce, spinach, herbs, radishes and other shallow-rooted crops. Our bed depth guide lists rooting depths crop by crop.
Weight adds up quickly. A moist soil mix weighs roughly 60 to 100 lb per cubic foot, depending on how much compost and bark it holds. A 2x4-ft box with 10 in of soil holds about 6.7 cu ft, which can weigh 400 to 650 lb when wet. A few tips:
- Check the frame rating. Use legs and cross supports rated for the full wet weight, plus a margin.
- Think about decks and balconies. Spread the load near beams or walls, and ask the building owner about load limits.
- Use a lighter mix. More compost and perlite and less topsoil keeps weight down without hurting plants.
- Fill it where it will live. A full elevated bed is not something to move.
Drainage and watering
Because air surrounds an elevated bed on every side, the soil dries much faster than in a ground bed. In summer heat, check it daily.
Drainage. The bottom needs holes or gaps so water can escape. Slatted wooden bottoms are often covered with landscape fabric to hold soil in while letting water through. Solid metal or plastic trays need drain holes every 6 to 12 in. Never let water pool in the bottom; roots rot quickly in a shallow, soggy box.
Watering. Water until it drips from the bottom, then wait until the top inch is dry before watering again. A drip line or soaker hose on a timer keeps moisture steady and saves daily hose trips. A 1- to 2-in layer of shredded leaves or fine bark mulch on top slows drying.
Protect what's below. On a deck or patio, set a tray or pavers under the drain holes to catch runoff and soil stains.
What grows well in an elevated bed
Pick crops with modest roots and a compact habit:
- Salad greens: lettuce, spinach, arugula, mesclun, chard.
- Herbs: basil, parsley, cilantro, chives, thyme.
- Roots: radishes, green onions, and short carrot types like round or half-length varieties.
- Fruit: strawberries, which drape nicely over the edge.
- Compact vegetables: bush beans, dwarf peppers, patio or determinate tomatoes with a short stake.
- Flowers: nasturtiums, marigolds and violas, which also draw pollinators.
Skip sprawling or deep-rooted crops such as winter squash, corn, full-size tomatoes and potatoes. They need more soil and space than a table bed offers.
How to choose
Measure yourself first
Set the rim height from your own hip or seated elbow height, not from a product label.
Pick sturdy legs
Look for thick legs and cross bracing rated for several hundred pounds of wet soil.
Insist on drainage
A slatted or perforated bottom is a must. Ask how water leaves the box before you buy or build.
Size for your reach
About 2 ft front to back if worked from one side; wider only if you can reach from both.
Related guides
- Comparing bed types, heights and sizes
- Kits that arrive ready to assemble
- Root depth for each crop
- Simple drip and watering setups
How deep should an elevated garden bed be?
Most hold 8 to 12 in of soil. That covers greens, herbs, radishes and strawberries. For deeper crops, choose a tall bed that sits on the ground instead.
Can you put an elevated raised bed on a deck?
Yes, if the deck can carry the wet weight. A small box can top 500 lb when watered, so place it near support beams and use a tray to protect the boards.
Do elevated beds need a liner?
Wooden boxes often get landscape fabric over the bottom slats to keep soil from sifting out. Avoid solid plastic liners unless you cut drainage holes in them.