Using any type of untreated lumber for building raised beds eliminates the chance of harmful chemicals leaching into the soil. Of the species used for untreated lumber, Douglas fir (Pseudotsuga menziesii) is the most widely available and least expensive.

Is Douglas fir good for raised garden beds?

Yes, you can use Douglas fir for building raised beds in your garden. Given its resistance to rot, Douglas fir is a durable wood, and can last as long as 10 to 15 years before needing replacement. … There are some clear advantages to using Douglas fir for raised beds.

What kind of wood should I use for a raised garden bed?

What Kind of Wood to Use? In most cases, cedar is the best wood to use for garden beds because cedar is naturally rot resistant. Western red cedar is commonly used, but white cedar, yellow cedar and juniper are also high-quality choices for outdoor construction projects.

Can I use Douglas fir for garden box?

Douglas Fir – Douglas Fir can last 5-7 years, and is the cheapest of the types of wood used for raised garden boxes. It’s also the most affordable option!

How long do fir raised beds last?

It really depends on the material of the raised bed; most gardeners choose cedar or redwood because of their natural resistance to rotting and infestations. In optimal conditions, they’ll last up to 10 to 20 years. However, longer-lasting materials are available as well.

Is Douglas fir stronger than cedar?

While Cedar is easier to work with and more rot resistant being of the Type II durability class, Doug Fir is stronger and of Type III durability.

Does Douglas fir need to be treated?

Waterproofing Douglas Fir Both need to be treated with tar or wax, with the coastal variety less accepting of treatments to protect the wood against invading water, according to a report by Naturally:Wood.

Which is better fir or cedar?

On average, cedars are slightly softer. However, cedar significantly outperforms fir in its resistance to decay and wet conditions. Even in contact with wet ground, cedar species take a long time to rot. Seasoned wood of both tree types is susceptible to insect attack.

What's the best wood for planter boxes?

Cedar and Redwood are two of the most wood types available and you can’t go wrong with either one. Cedar is particularly favoured due to its durable, lightweight and crack resistant qualities. Redwood, on the other hand, is naturally rot resistant and has increased longevity but can be a more expensive alternative.

What is the difference between fir and cedar?

The primary differences between fir and cedar are longevity and appearance. All wood ages and turns a greyish/silver color. Cedar: … More expensive than fir but worth it if you’re putting in a raised bed garden you want to last a long time and continue to look great over many years.

Article first time published on

Is fir wood good for raised beds?

You can use fir boards, which are moderately rot-resistant, for raised garden beds. Since they are not exceptionally rot-resistant, however, taking precautions to waterproof the boards, keep them away from excess moisture and reinforce them will help extend the life of the raised bed.

Can I use treated wood for planter boxes?

Yes, the “new” pressure treated wood is safe for use for raised garden frames… with a few precautions! Up until 2003, the most common preservative used for pressure treated wood was chromated copper arsenate (CCA), a compound using arsenic as its primary rot protectant.

What size wood do I need for a raised garden bed?

Make your raised bed from lumber that is either 1-inch or 2-inches thick; a piece of lumber that is 2 inches thick will withstand more wear than a piece of lumber that is 1 inch thick; it will also be more expensive. Standard widths of lumber are 2-, 4-, 6-, 8-, 10-, 12-inches.

What is Douglas fir wood?

Douglas-fir is a high-quality wood for the manufacturing of sashes, doors and windows. It is also used to produce a wide variety of products including general millwork, flooring, furniture, cabinets, veneer, vats, ships and boats, transmission poles and marine pilings.

Can you build a fence with Douglas fir?

Douglas Fir – This is another abundant wood type that is very popular for fencing. … It is beautiful and fragrant, definitely a preferred choice for fences and decks. It is insect resistant and does not require painting or staining. Usage for fence posts is discouraged as it can rot from absorbing too much moisture.

How do you stop wooden raised beds from rotting?

1. Choose rot-resistant wood.
2. Stain the wood.
3. Install a liner.
4. Use stone to build the bed.
5. Use plastic to build the bed.

Is Douglas fir soft or hard wood?

Doug-Fir is one of the most popular softwoods used both in factories and at home, and it is quite an interesting species. Despite being a softwood, it possesses features that enable it to be used in tasks mostly meant for hardwoods. Significantly, its high versatility gives it an unbeatable edge over its competitors.

Is Doug Fir good for outdoor use?

Turns out Douglas fir is more than just a good-looking wood. Its durability and resistance to rot and insects make it a favorite choice for outdoor projects like porch decking as well. … It’s also naturally resistant to rot, decay, and insects.

Does Douglas fir turn gray?

Even treated fir will begin to gray after a few years if additional sealing isn’t done. That’s too bad.

Is Douglas fir or cedar cheaper?

Douglas Fir Wood Decking is slightly more expensive than Cedar Wood Decking. Douglas Fir is found in Western America, from Alaska to California, and as far east as British Columbia.

Is Douglas fir a good building material?

Douglas fir is the highest rated of all the North American softwoods in both strength-to-weight ratio and in stiffness. These qualities make it first choice for contractors to use as framing for buildings as well as for such things as bridges and railroad ties.

Which is better redwood or Douglas fir?

Redwood is a better choice for fencing material than Douglas fir and is the preferred choice of professionals, according to Charles & Hudson. Perhaps the most important reason is that the oils in redwood give it natural weather resistance, and it lasts two or three times as long as Douglas fir outdoors.

How long will pine last in raised bed?

Raised pine beds last an average of five years, but it depends on weather, bugs, and also whether you use treated or untreated pine. Treated pine will likely last longer than five years, but the chemicals in the treatment are generally believed to have negative effects on plant growth and on safety of produce.

Does fir wood smell like cedar?

What does Fir smell like? Douglas fir has a pleasant aroma. It doesn’t have as strong of a scent as Cedar, but is smells much better than some firewoods, like Cottonwood, that are known for smelling like cat pee when burnt wet.

Is Cedar good for raised beds?

There are many choices of materials to use for raised garden bed construction. … Cedar lumber is often used in constructing raised beds. It offers a natural resistance to rot and insects. Eastern red cedar (Juniperus virginiana) is very rot resistant and will last for years even when in contact with soil.

Is Douglas fir good for landscaping?

Douglas firs in the landscape are elegant and attractive. The tree’s form is a tall, slender triangle, and young firs are often used as Christmas trees. There are also many dwarf varieties available to the home gardener.

Is Douglas fir wood weather resistant?

Fir is a type of species among softwoods that stays dimensionally stable without requiring any drying or another remedy. In a way, this highly valuable atmospheric moisture management property makes this lumber waterproof, although it is capable of holding water.

Is Douglas fir lumber rot resistance?

Rot Resistance: Douglas-Fir heartwood is rated to be moderately durable in regard to decay, but is susceptible to insect attack. Workability: Typically machines well, but has a moderate blunting effect on cutters. Accepts stains, glues, and finishes well.

Are treated landscape timbers safe for vegetable gardens?

CCA-treated landscaping timbers are still considered safe for use in a variety of outdoor structures, including decks, fences and gazebos, but should never be used in vegetable gardens, or where the wood may be in contact with food.

Can I use decking boards for raised beds?

I laid the decking out along the floor and then laid the supporting timber over the top, where the decking planks would join together. I decided to secure the decking raised bed together from the back so that no screws would be showing on the finished side.

Can I use treated timber for raised beds?

Similarly treated timber is suitable for raised flower or vegetable beds, gardens, landscaping, mushroom trays, grape and tomato stakes, greenhouse uses and similar applications.