A pallet bed takes one afternoon and costs almost nothing

A raised bed made from pallets is the fastest way to start gardening if you have a flat space and access to free or cheap pallets. You stack four pallets into a rectangle, find the corners, add landscape fabric to the bottom, and fill it with soil. The whole job takes three to four hours and requires only a drill, wood screws, and a level. Most people find pallets at warehouses, loading docks, or online marketplaces where businesses give them away because disposal costs money.

The main trade-off is durability. Untreated pallets last two to four seasons before the wood softens and splits. Treated pallets last longer but may contain chemicals you do not want near vegetables—check the stamp on the side. If you want a bed that lasts five years or more, you will need to either replace the pallets or line them with a barrier. For a first bed or a temporary setup, though, pallets are hard to beat for speed and cost.

Key Takeaways

  • Pallets are free or very cheap from warehouses and businesses, but untreated wood lasts only two to four seasons before rotting.
  • You need four pallets, a drill, 16 to 20 wood screws (3 inches long), landscape fabric, and a level to build a basic bed in one afternoon.
  • Stack the pallets flat, drill pilot holes through the sides, and screw the corners together so the bed does not shift when you fill it with soil.
  • Line the bottom with landscape fabric to block weeds and slow soil drainage, then add 8 to 12 inches of garden soil or compost.
  • Inspect pallets for the "HT" stamp (heat-treated, safe) and avoid any marked "MB" (methyl bromide, a pesticide).

Finding and choosing pallets

Pallets are stacked everywhere goods are shipped or stored. Start by calling local warehouses, garden centers, appliance stores, and furniture shops—many keep a pile out back and will let you take them for free. Online marketplaces like Facebook Marketplace and Craigslist often have listings from people clearing out storage. Some businesses advertise pallets as free; others charge a few dollars per pallet if they are in good condition.

Check the stamp on the side of each pallet before you take it. A stamp that says "HT" means heat-treated, which is safe for gardens and food. A stamp that says "MB" means it was treated with methyl bromide, a pesticide—do not use these for vegetables or herbs. Pallets with no stamp are usually safe, but they may be older and more likely to rot. Look for pallets with solid or closely spaced boards rather than wide gaps, because gaps make it harder to contain soil.

You need four pallets of roughly the same size. Standard pallets are 48 inches long and 40 inches wide, which makes a bed about 4 feet by 4 feet—a good size for a first garden. Slightly smaller or larger pallets work fine; the bed just ends up a different shape. Avoid pallets that are warped, cracked all the way through, or soft to the touch, because they will not hold together under the weight of soil and water.

Tools and materials you will need

Gather these items before you start: a power drill or cordless drill, a drill bit slightly smaller than your screws (for pilot holes), wood screws 3 inches long (deck screws work well), a level, landscape fabric, and a utility knife. You will also need soil—plan for about 20 to 30 cubic feet to fill a 4-by-4 bed 8 to 12 inches deep. A tape measure and pencil are helpful for marking where to drill.

Wood screws are better than nails because they hold tighter and are easier to remove if you need to adjust the bed later. Buy screws rated for outdoor use; they resist rust better than standard screws. Landscape fabric blocks weeds from growing up through the bottom and slows water drainage slightly, which keeps the soil moist longer. You can find it at any garden center, usually in rolls. A utility knife or old scissors will cut it to size.

Assembling the four corners

Lay all four pallets flat on the ground in the shape of a rectangle. The pallets should touch at the corners but not overlap. Use the level to check that the ground is reasonably flat—a slope of more than a few inches will cause the bed to settle unevenly. If the ground is very uneven, you can dig out high spots or add soil to low spots, but for most yards a slight slope is fine.

At each corner, you will drill through the side of one pallet and into the end of the next. Mark two spots on each corner—one near the top and one near the bottom—where you will drill. Drill a pilot hole (a small hole that guides the screw) at each mark, going through the side board of one pallet and partway into the board it meets. Then drive a 3-inch screw into each pilot hole. The screw pulls the two pallets tight together. Repeat this at all four corners, using two screws per corner for a total of eight screws.

Check the corners with the level again. If one corner is higher than the others, you can shim it by sliding a shingle or thin board under the pallet. The bed does not have to be perfectly level, but it should not rock or shift when you push on it. If it does, tighten the screws or add more screws at the corners.

Lining the bottom and adding soil

Cut landscape fabric to fit the inside bottom of the bed, with a few inches of extra fabric folded up the sides. Lay it flat and smooth out wrinkles. You can staple it to the inside of the pallets if you want it to stay in place, but it is not necessary—the weight of the soil will hold it down. The fabric keeps weeds from pushing up through the gaps in the pallet boards and slows water from draining too fast.

Fill the bed with garden soil or compost. You can buy bags from a garden center, order a bulk delivery, or mix your own from compost and topsoil. Fill to a depth of 8 to 12 inches—deeper is better for root vegetables and perennials, shallower is fine for herbs and shallow-rooted plants. Water the soil as you fill to help it settle and to check for low spots. Add more soil if it settles below the rim of the pallet.

Extending the life of a pallet bed

Untreated pallets soften and rot from constant moisture. To slow this, paint or stain the outside of the pallets before you fill the bed. Use an exterior wood stain or sealant, not interior paint. This does not make the bed last forever, but it can add a season or two. Avoid pressure-treated wood stain, which can leach chemicals into the soil.

Another option is to line the inside walls of the bed with plastic sheeting or pond liner. This keeps the soil from touching the wood directly and can extend the life to five or six years. Drill a few small drainage holes in the plastic at the bottom so water does not pool. If you go this route, use untreated pallets only—treated wood can leach chemicals through plastic.

When the pallets finally rot and split, you can replace them one at a time without emptying the bed. straightforward unscrew the old pallet, slide in a new one, and screw it back in place. Many gardeners treat this as a normal maintenance task and budget for replacing one or two pallets every few years.

Positioning the bed in your yard

Place the bed where it will get at least six hours of direct sun per day for vegetables, or three to four hours for leafy greens and herbs. Check the sun pattern in your yard over a few days before you commit to a spot. Avoid placing the bed directly under trees, where roots will compete with your plants for water and nutrients. If you have a choice, a spot near a water source (a hose or rain barrel) makes watering easier.

Make sure the ground underneath is reasonably well-draining. If water pools there after rain, the bed will stay soggy and roots will rot. If the ground is very poor drainage, you can dig out the top few inches and replace it with gravel or sand before setting down the pallets. You can also raise the bed higher by stacking two pallets on top of each other at each corner, though this uses more materials and makes the bed harder to work in.

Frequently Asked Questions

Can I use pallets that have been treated with chemicals?

Pallets marked "HT" (heat-treated) are safe. Avoid pallets marked "MB" (methyl bromide), which is a pesticide. If a pallet has no stamp and you are unsure, ask the business where you got it what it was used for. Pallets that carried food or non-hazardous goods are usually fine; pallets that carried chemicals or pesticides are not.

How deep should the soil be?

Eight to twelve inches is standard and works for most vegetables, herbs, and flowers. Root vegetables like carrots and potatoes need at least ten inches. Shallow-rooted plants like lettuce and spinach can get by with six inches. Deeper is always better if you have the budget for soil, because it gives roots more room and holds moisture longer.

Do I need to add a bottom to the bed?

No. The landscape fabric blocks most weeds and lets water drain. If you have a serious gopher or mole problem, you can add hardware cloth (a metal mesh) under the fabric, but this is rarely necessary. The open bottom also lets roots grow deeper into the native soil if they need to.

How often do I need to replace the pallets?

Untreated pallets usually last two to four seasons before the wood softens and splits. Stained or sealed pallets last longer. When a pallet fails, you can replace it one at a time without emptying the bed. Many gardeners treat this as routine maintenance and budget for replacing one or two pallets every few years.

Can I stack pallets to make the bed taller?

Yes. Stacking two pallets at each corner makes a bed about 16 inches deep, which is good for root crops and gives you more soil volume. Use four screws per corner instead of two to keep the stacked pallets from shifting. Taller beds are easier on your back but use more soil and materials, and the wood is exposed to more sun and wind, which speeds rot.