Classic Natural Cedar L-Shaped Raised Garden Beds (2024)

FAQs

Is cedar good for raised garden beds? ›

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. However, the wood is very dense and can be hard to work with.

Most raised beds are constructed from lumber. Pine and other framing lumber will last about 4 to 5 years, while more expensive cedar will hang together for 8 to 10 years. Don't use redwood, which is an endangered species.

Avoid using older types of wood treatments such as CCA, creosote, and Penta-treated lumber. Research from Oregon State University showed that pressure-treated lumber does increase soil copper concentrations by a minor amount, but only within 1 inch of the raised-bed edge.

Cedar is naturally resistant to rot and pests thanks to something called tannins. That makes cedar a timber that will last a long time. You can expect to garden in your cedar raised bed for at least 10 years before it starts to degrade.

Using cedar wood for raised beds can give you a few extra years before the boards rot, compared with other untreated lumber like pine. Cedar is often used in outdoor projects because it resists decay.

Adding rocks to the bottom of a raised bed makes it challenging to amend or improve the soil over time. It restricts access to the lower layers and can impede the addition of organic matter or nutrients. Over time, rocks will get mixed in with your raised bed soil, not cool! Rocks are expensive and heavy!

Keep beds at least 6 feet from pavement and south-facing walls, which intensify summer heat. HOW LONG DO BEDS LAST? That depends on what they're made of. Beds built with western red cedar can last 10 to 15 years; galvanized steel, 20 years; masonry or plastic composites, indefinitely.

Hardwood lumber is so expensive. Yes, wood from stores like Lowe's or Home Depot, such as cedar or treated pine, can be suitable and affordable for raised bed gardens.

While untreated wood has a limited lifetime, using cedar, redwood, cypress, or hemlock can prolong the garden's life expectancy by five or ten years, meaning you can enjoy decades with your wooden raised beds. Steel is next in durability, and stone and brick can quite literally last a lifetime.

I've seen suggestions online to add plastic bottles or trash bags as filler to the bottom of raised beds to save money on soil. This not only defeats the purpose of installing a raised bed in order to give your plants' roots all the growing room they need, it also can negatively impact the drainage of your raised beds.

Is treated lumber OK for raised garden beds? ›

He stated in a bulletin titled, Treated Wood in Raised Bed Gardening, “Scientific evidence and data have shown that using pressure treated wood for raised bed or box gardening is safe to adults and children in terms of the plants grown and used in these containers.” He further explains, “All chemicals in consumer ...

Vegetable Beds: On the other hand, when it comes to vegetable beds, the bed must be approximately 12 to 18 inches deep to ensure adequate depth for the roots of your plants. This is especially important if your raised bed is placed on cement or the patio, which will inhibit roots from growing deeper into the ground.

Cedar. Cedar is a long-lasting, durable type of wood that is ideal for constructing raised garden beds. It has a high level of natural tannins to help repel rot and pests, allowing the wood to remain strong and intact for up to 10 years before it begins to break down and degrade.

Until the safety of treated wood is proven conclusively, we recommend you use a naturally rot-resistant wood like red cedar, black locust or redwood. Under most circ*mstances, these woods will last 10 – 20 years.

I recommend at the very least coating your lumber in linseed oil or beeswax to preserve them for the long haul. Some gardeners use lining between the interior of their raised bed and soil to protect the wood. Even with the lining, you'll get seepage of water that will penetrate that wood and linger.

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.

The safest wood to use for vegetable container gardens is cedar. It resists rot and lasts a long time, but it is pricey. You can safely use other kinds of untreated hardwood to build raised beds, but your project will rot and warp in a few years, depending on the wood.

Safe practices for working with treated wood recommend treated wood not be used where it may come into direct or indirect contact with drinking water or a component of food, animal feed or beehives. The USDA prohibits treated lumber for soil contact use in their certified National Organic Program published in 2011.

Cedar and redwood are naturally water-resistant but can be expensive and hard to find. Hemlock, fir and pine are suitable materials for raised beds but aren't very long lasting. Pressure-treated lumber is also an option, but it's been a controversial topic for many years.