Key takeaways
- Choose a spot with at least six to eight hours of direct sun for most vegetables.
- Level the ground first. A bed that sits on a slope will rack and put stress on the corners.
- Fill with a mix of quality topsoil and compost as the plant-care guides suggest; do not use soil from a contaminated site for edibles.
- Allow for the extra weight: a large, deep bed full of moist soil can weigh several hundred pounds, so do not place it on a rooftop or weak deck without checking load limits.
A kit built from untreated, rot-resistant cedar boards suits most gardeners who want a food-safe, long-lasting bed, with the choice between brands coming down to board thickness, bed height and how easily the corners lock together. Gardenary, Frame It All, Greenes Fence and Vego Garden are among the names most often discussed, and each fits a slightly different buyer.
Our top picks
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Cedar Raised Beds at a Glance
| Option | Best for | Construction (as makers describe it) | Limits |
|---|---|---|---|
| Greenes Fence cedar raised beds | First-time gardeners wanting a simple kit in common sizes | Western red cedar boards, interlocking or screw-together corners, several heights offered | Boards are often thinner than premium lines; confirm the board thickness in the listing |
| Frame It All cedar and composite sets | People who want modular, stackable beds | Cedar-based and composite boards that connect with brackets or corner pieces | Many pieces to assemble; specific kits vary in material |
| Gardenary cedar raised beds | Gardeners wanting a thicker, premium-feeling bed | Cedar boards sold in several sizes and heights, with tool-free assembly in some designs | Premium tier; shipping weight is high |
| Vego Garden modular beds | Those who want a metal-based alternative with deep soil volume | Powder-coated steel panels, modular heights; not cedar | Not wood; a different look and a different thermal behavior |
| Local lumberyard or home-built cedar | DIYers comfortable with a saw and drill | Rough-cut or dimensional cedar planks cut to your size | Requires tools and time; cost varies by region |
Why Cedar?
Cedar contains natural oils that slow rot and deter some insects, which is why it is often chosen for beds that will sit on damp soil for years. Garden writers and university extension guides commonly describe western red cedar as one of the more durable untreated woods for this purpose, with bed lifespans often described in the range of a decade or more in typical conditions, depending on climate and soil moisture. It is not rot-proof, and the lifespan varies with drainage, shade and rainfall.
Many gardeners also choose untreated cedar over pressure-treated lumber because they are growing edibles and prefer to avoid chemical treatments next to the soil. Modern pressure-treated lumber uses different preservatives than the older arsenic-based products, but some gardeners still prefer to skip it. If you have questions about treated wood and edibles, your local extension office can advise on regional guidance.
What to Look For
Board thickness and rigidity
Thicker boards resist bowing when filled with wet soil, which is heavy. Thin boards can bulge on longer sides, especially in a bed longer than about eight feet. If a kit lists a board thickness, compare it between brands rather than assuming all cedar kits are equivalent. Some premium makers advertise boards a full inch or more in thickness, while budget kits may use noticeably thinner boards.
Bed height
Shallow beds of around six to eight inches are fine for lettuce and herbs. Tomatoes, peppers, carrots and other deeper-rooted crops generally do better in beds at least 10 to 12 inches deep, and taller beds bring the soil closer to your hands if bending is an issue. Taller beds need more soil, so budget for fill.
Corner design and assembly
Corner joints are where wood beds fail first. Look for sturdy brackets, interlocking joints or corner posts, and read how the screws are used. Tool-free kits are convenient, though some reviewers say they feel less rigid than screwed or bolted designs. Keep a drill and a level on hand.
Size and layout
Four feet wide is a common bed width because most adults can reach the middle from either side. Wider beds mean stepping into the soil, which compacts it. Paths of two to three feet between beds allow a wheelbarrow or mower to pass.
Liners and bottoms
Many gardeners place cardboard or landscape fabric under the soil to suppress weeds. Avoid plastic sheeting on the sides that traps moisture against the wood. If gophers or moles are a concern in your area, some gardeners add hardware cloth under the bed.
Fit and Setup Notes
- Choose a spot with at least six to eight hours of direct sun for most vegetables.
- Level the ground first. A bed that sits on a slope will rack and put stress on the corners.
- Fill with a mix of quality topsoil and compost as the plant-care guides suggest; do not use soil from a contaminated site for edibles.
- Allow for the extra weight: a large, deep bed full of moist soil can weigh several hundred pounds, so do not place it on a rooftop or weak deck without checking load limits.
Care and Longevity
Most makers advise leaving cedar untreated for edible gardens, and the wood will weather to a silver-gray over time, which is normal. Some gardeners apply a food-safe sealer, but you should follow the maker’s guidance because sealers can affect the warranty and are not necessary for the wood to function. Keep the soil level a bit below the top edge so splashes do not stay on the upper boards. Inspect corners each spring and tighten fasteners. In wet climates, a gravel base under the bed or a slightly raised footing helps the bottom boards dry out.
Budget Tiers
Budget
Entry-level cedar kits from brands like Greenes Fence use thinner boards and simpler corner joints. They suit a first trial season or a small herb bed. Expect to replace them sooner than thicker beds, and consider adding a corner brace if boards bow.
Mid-range
Mid-range kits from Frame It All and some Greenes lines often add taller sides and sturdier hardware. This tier suits most vegetable gardeners.
Premium
Gardenary and other premium cedar makers advertise thicker boards and stronger joinery. The tradeoff is weight and higher up-front cost, which pays off in longer service life if the claims hold up.
Pick X If …
| Pick this | If you … |
|---|---|
| Greenes Fence cedar kit | want an easy, affordable first bed |
| Frame It All set | plan to expand or restack beds over time |
| Gardenary cedar bed | want a thick, premium board and plan to keep it for years |
| Vego Garden steel bed | prefer metal for durability and deep soil, and do not need cedar |
| DIY cedar planks | already own tools and want a custom size |
Alternatives
- Galvanized steel beds: Long lasting and easy to assemble, though they can warm soil faster in hot climates.
- Fabric grow bags: Cheap, portable and drain well, but they dry out quickly and last fewer seasons.
- Composite or recycled plastic beds: Rot-proof and light, though they lack the natural look of wood.
Common Buying Mistakes to Avoid
The biggest mistake is choosing a bed by price alone and ending up with thin boards that bow within a season or two. Compare board thickness and corner hardware, not just the dimensions. Another common issue is underestimating the soil needed. A bed that measures four feet by eight feet and is a foot deep holds a lot of fill, so calculate the volume in cubic feet or yards before you order, and ask local suppliers about bulk delivery.
Gardeners also often place beds in the wrong spot. Look at sunlight across the day, avoid low areas where water collects, and keep beds clear of large tree roots that can invade from below. Consider water access too; a bed far from a hose bib becomes a chore in summer. Finally, think about accessibility. If bending is hard, a taller bed or a narrower one lets you work from a stool or a chair. Leave enough path width for a wheelbarrow, and consider mulching the paths with wood chips or gravel to reduce mud and weeds.
It also helps to plan crops before you buy. Pole beans and tomatoes need trellises, which some kits can accept and others cannot, so look at whether the frame will support added hardware. Drip irrigation lines and hoop covers are easier to fit when the top edge is flat and sturdy.
Frequently Asked Questions
Is cedar safe for vegetable gardens?
Untreated cedar is widely used for edible beds because it is not chemically treated. Cedar is naturally resistant to rot, and it is not generally considered a concern for growing food. If you are unsure about a particular product, read the maker’s description of any finishes or treatments.
How long does a cedar raised bed last?
Garden guides commonly say several years to a decade or more, depending on board thickness, climate and soil moisture. Thicker boards, good drainage and sun exposure help. The wood will weather to gray even when it is still structurally sound.
Do I need to line the bottom?
Many gardeners lay cardboard or landscape fabric to suppress weeds, and hardware cloth if burrowing animals are a problem. Avoid sealing the bottom completely, because drainage matters.
How deep should my bed be?
Six to eight inches is workable for greens and herbs, while 10 to 12 inches or more suits tomatoes, peppers and root crops. Deeper beds cost more to fill but hold moisture longer.
Should I seal or stain cedar?
It is not required. If you want to slow weathering, choose a product the maker states is safe for garden use and follow the label. Many gardeners simply let the wood age naturally.
Can I put a raised bed on a patio or deck?
Possibly, but wet soil is heavy and drainage water can stain surfaces. Check the load rating of the surface, use a tray or liner to protect it, and consider a shallower bed or container instead.
