Railroad ties (treated) are easy because you can simply lay them on the ground and drive in iron spikes.One option for those concerned is to line the inside of the bed walls with polyethylene. Some gardeners still feel uncomfortable with treated wood. Unlike the past however, studies have shown that any compounds that leach out are well within safe levels established by the EPA. Modern treated wood has chemicals to prevent rotting.For example, a 2-inch-thick board of larch wood should last a decade without treatment. Another option is to simply choose much thicker boards of untreated wood. Recycled wood made from plastic bottles is also a bit pricey but will last indefinitely. Cedar is the top choice because it’s both rot-resistant and durable, lasting 10 to 15 years. It is also insect-resistant because of oils in the wood. Rot-resistant woods like cedar, redwood, or locust will last much longer they are expensive. Untreated wood. Pine is cheapest but is going to rot after a few years, as will many untreated woods. Cement blocks can be used to make a bed for heat-loving plants.Here’s the list of possibilities: Years ago, I was lucky enough to acquire a good amount of roofing slates and used those to edge a raised bed on a slope. Bricks can be placed end to end around the edges or if you have enough of them, stand them on end to make higher sides for the bed.īury a bit of the bottom to stabilize them and to deter weeds from slipping under and in between the bricks. You can choose to edge your raised beds using any materials you have at hand-wood, stones, bricks, cement blocks. Stay away from painted or pressure treated wood that may leach chemicals or lead into your soil. Choosing the Right Material for Raised Beds Along with being practical, raised beds make for an attractive welcoming garden space. Learn more about the benefits of raised garden beds.
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