# Best Wood for Raised Garden Beds: Cedar, Redwood, PT, and Pine

Cedar, redwood, pressure-treated pine, and untreated pine compared for longevity, food safety, and cost. Clear recommendations by budget and climate.

By Spetz Editorial Team, published 2026-10-07. Category: Outdoor & garden.

If you want a straight answer: **western red cedar** is the best all-around wood for a raised garden bed where you plan to grow food. It lasts 10 to 15 years, needs no chemical treatment, and costs less than redwood in most of the country. But "best" depends on your budget, your climate, and how long you want the bed to stand. This guide compares four common choices so you can pick the right one at the lumber aisle, not after the first board rots.

## The four options at a glance

| Wood | Expected life | Food safe? | Typical price (2x12x8) | Best fit |
|---|---|---|---|---|
| Western red cedar | 10-15 years | Yes | $40-$60 | Most climates, mid-range budget |
| Redwood | 15-20 years | Yes | $50-$75 | West Coast, long-term beds |
| Pressure-treated pine | 20+ years | Debated (see below) | $20-$35 | Tight budget, non-edible beds |
| Untreated pine | 3-7 years | Yes | $15-$25 | Dry climates, temporary beds |

Those prices are for a single 2x12x8 board as of October 2026 and will shift depending on your region and retailer.

## Cedar: the default recommendation

Cedar's natural oils repel rot and insects without any added chemicals. That makes it the easiest "yes" for vegetable gardens. A 2x12 cedar board set into soil in the Pacific Northwest will behave differently than one in Arizona, but 10 to 15 years is a reasonable range across most US climates.

The main knock on cedar is price. At $40 to $60 per 2x12x8, a simple 4x8-foot bed using four boards and corner posts can run $200 or more in lumber alone. That is real money, but spread over a decade of growing seasons it works out to less than $20 a year.

One hardware detail people overlook: use **stainless steel deck screws** with cedar. Standard coated screws react with the tannins in the wood and leave dark streaks down the face of the board. The same applies to redwood. Go with 2.5 to 3-inch stainless steel screws for 2x lumber and you will not have staining problems.

## Redwood: premium durability, premium price

Redwood can last 15 to 20 years thanks to natural tannins similar to cedar's. It is completely food-safe and beautiful. The catch is cost and availability. Redwood is easiest to find and most affordable on the West Coast, where it is locally sourced. In the Midwest or Southeast, expect to pay a premium, if you can find it at all.

If you live in Northern California or Oregon and plan to keep your beds for a long time, redwood makes sense. For most of the rest of the country, cedar gives you nearly the same rot resistance at a lower price with wider availability.

## Pressure-treated pine: the budget pick with caveats

This is the wood that sparks the most debate, and for good reason. Modern pressure-treated (PT) pine uses copper-based preservatives like Alkaline Copper Quaternary (ACQ) or Copper Azole (CA). The older treatment, Chromated Copper Arsenate (CCA), contained arsenic and was phased out of residential lumber in the early 2000s. The current formulas are considered much safer.

At $20 to $35 per 2x12x8, PT pine is roughly half the cost of cedar and will outlast it, often going 20 years or more. For a flower bed, a decorative border, or any non-edible planting, it is hard to beat.

For vegetable gardens, the picture is more complicated. Studies show that some copper does leach from PT lumber into surrounding soil, but the amount plants absorb is generally minimal and not considered a health risk by most researchers. That said, the USDA National Organic Program does not allow pressure-treated lumber in contact with soil for certified organic growing. If you follow organic practices at home, PT wood does not qualify.

**The plastic liner question.** You will find strong opinions on both sides. Some gardeners line the inside of PT beds with heavy plastic sheeting to block any chemical contact with the soil. Others argue the liner is unnecessary with modern treatments and can actually trap moisture against the wood (speeding up rot) or interfere with drainage if you do not punch enough holes. We would not call either camp wrong. If lining the bed gives you peace of mind, use a food-grade plastic and cut drainage slits along the bottom edge. If you skip the liner, you are still within the range of what current research supports.
![Untreated pine, pressure-treated pine, and cedar boards compared side by side](https://spetz.ai/blog/media/17/img-2-2c5ac1ab.jpg)
## Untreated pine: cheap now, replaced soon

Plain pine is the least expensive option at $15 to $25 per board, and it is completely food-safe. The tradeoff is lifespan: 3 to 7 years, and on the shorter end of that range if you live somewhere humid. In the Southeast or Pacific Northwest, expect closer to 3 years before the bottom edges go soft.

Untreated pine makes sense in two situations. First, if you are not sure you will stick with gardening and want to test the hobby without a big lumber investment. Second, if you live in a dry climate (parts of the Southwest, high desert) where the wood simply does not stay wet long enough to rot quickly.

You can stretch the life of untreated pine with a food-safe sealant. Products like Seal It Green Garden Box Armor or Vermont Natural Coatings Exterior Wood Stain are plant-based and non-toxic. Coverage runs about 150 to 300 square feet per gallon. Apply on a dry day and give the sealant 24 to 72 hours to cure fully before filling the bed with soil. Most sealants are rain-ready within 4 to 8 hours, but full cure takes longer.

## Construction details that matter more than wood choice

Whichever lumber you pick, a few building decisions will determine how long the bed actually lasts.

**Use 2-inch thick boards.** A nominal 2x12 (actually about 1.5 inches thick and 11.5 inches wide) resists bowing from soil pressure far better than a 1-inch board. Thin boards sag outward within a season or two, and the joints open up. The cost difference per board is small compared to rebuilding the whole bed.

**Keep the bed 4 feet wide or narrower** if you can reach from both sides. This is the mistake that does not show up until planting day: a 5 or 6-foot-wide bed means you are stepping into the soil to weed the middle, compacting the very ground you are trying to keep loose. If the bed sits against a fence with access from only one side, aim for 2 to 3 feet wide.

**Match your screws to the wood.** Stainless steel for cedar and redwood, corrosion-resistant coated deck screws for PT and untreated pine. Length should be 2.5 to 3 inches for 2x stock. Pre-drill near the ends of boards to prevent splitting.

**Check drainage underneath.** If your yard has heavy clay, loosen the native soil below the bed before you fill it. Otherwise water pools at the bottom, roots sit in muck, and the wood rots from the inside out faster than it should.

## What to avoid entirely

A few materials show up in online advice that we would steer you away from:

- **Railroad ties and old utility poles.** These are treated with creosote, a coal-tar product you do not want near food or skin.
- **Pallets of unknown origin.** Some are treated with methyl bromide (stamped "MB"). Others have absorbed chemicals from whatever they carried. Not worth the risk for a food garden.
- **Thin composite or MDF boards.** They swell, delaminate, and fall apart in ground contact.

If you are standing in the store and they are out of the wood you planned on, Douglas fir or white oak are reasonable substitutes. Douglas fir is moderately rot-resistant and usually priced between pine and cedar. White oak has good natural durability but can be hard to find in long boards.
![Weathered raised garden bed filled with growing lettuce and herbs](https://spetz.ai/blog/media/17/img-3-40ea3e82.jpg)
## Our recommendation by situation

**Best for most people growing vegetables:** Cedar. It balances cost, lifespan, and food safety well in nearly every US climate.

**Best on a tight budget for edible gardens:** Untreated pine sealed with a food-safe product. Accept the shorter lifespan and plan to rebuild in 5 to 7 years.

**Best on a tight budget for flowers or non-edible plants:** Pressure-treated pine. It will outlast everything else on this list.

**Best if money is not the constraint:** Redwood, especially if you are on the West Coast and can source it locally.

The first step is measuring your space, deciding on bed dimensions (4 feet wide is the sweet spot), and counting how many boards you need. Then head to the lumber yard knowing exactly which wood fits your garden, your climate, and your wallet.

## Quick answers

### Is pressure-treated wood safe for vegetable garden beds?

Modern PT lumber uses copper-based preservatives (ACQ or CA), not the old arsenic-based CCA. Research shows minimal uptake by plants, but the USDA organic program does not permit it. If you want zero doubt, use cedar or untreated pine with a food-safe sealant.

### How long does a cedar raised bed last?

Expect 10 to 15 years depending on your climate and soil moisture. Beds in dry climates last longer. Using 2-inch thick boards and stainless steel screws helps the bed reach the upper end of that range.

### Can I use regular pine for a raised garden bed?

Yes, but it will only last about 3 to 7 years before rotting. A food-safe sealant adds some protection. Untreated pine works best in dry climates or as a low-cost starter bed.

### What screws should I use for a cedar raised bed?

Stainless steel deck screws, 2.5 to 3 inches long. Standard coated screws react with cedar's tannins and cause dark stains on the wood.

## Sources

- [gardeners.com](https://www.gardeners.com/products/exterior-wood-stain)
- [sealitgreen.com](https://www.sealitgreen.com/products/garden-box-armor)
- [eagleclawco.com](https://www.eagleclawco.com/blogs/news/best-screws-for-raised-garden-bed)
- [thrivelot.com](https://www.thrivelot.com/resources/7-non-toxic-wood-treatments-for-raised-beds)