Skip Sealer: There's A Better Method To Keep Wood Raised Garden Beds From Rotting

Wood remains a popular raised bed material for growing vegetables or flowers because of its versatility. Gardeners can customize wood raised beds in various cuts and sizes to suit their preferences. However, wooden raised garden beds have some disadvantages, such as rotting within a year, which is more common in untreated lumber. While sealing the wood with paint or stain slows the rotting process, some gardeners use a different method, like Shou Sugi Ban. This method involves charring the wood to prevent rot.

Shou Sugi Ban, also known as Yakisugi,is an ancient charring technique from Japan that has been usedto protect and increase the lifespan of wood. The charring brings surprising benefits beyond rot prevention, like protecting the wood from insects and fire. The Shou Sugi Ban method isn't limited to gardening either; people have used it to build homes. Charring wood for raised bed gardens makes perfect sense, since consistent water and moisture speed up rot for untreated lumber. If you've been reconsidering installing a raised bed garden because of the risk of the wood rotting, the charred wood method is a great way to solve the problem.

Many gardeners choose naturally rot-resistant wood for their raised garden beds, but Shou Sugi Ban allows you to use other types of wood that may be cheaper. Those who use this method start by burning the wood's outer layer with a propane torch. After charring the surface, remove the sooty layer by scrubbing or brushing it off. Finally, seal the wood with an oil, like boiled linseed oil, wait 10 minutes, and then return to remove any remaining oil on the wood.You can skip the sealing part if you want, but it will add even more protection. During the process, use proper safety precautions and keep the torch away from any flammable materials.

You might be wondering whether you can Shou Sugi Ban any wood and how long it lasts. The types of wood typically used to build raised bed gardens — including pine, Douglas fir, cedar, and cypress — can all be treated with this process to help preserve the wood. The durability of raised beds treated with this charred method will vary based on the many factors that contribute to weathering. However, some experienced sources claim the Shou Sugi Ban method can prevent raised garden beds from rotting for an astounding half a century.