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 circumstances, these woods will last 10 â€“ 20 years when used for raised beds.
Wood options for Raised Garden Boxes. Redwood or Black Locust â€“ Definitely the best option for raised garden boxes in terms of longevity because they are naturally rot-resistant and have been known to last up to 20 years. Cedar â€“ Another rot-resistant wood, cedar can last 10-15 years and looks gorgeous.
Here are some options: 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 an option.
HI I purchased a raised bed stacking joint system from Harris Seed Co. which is designed to be used with 2" x 6 " lumber. Home Depot told me to use pressure .
Gardeners have used pressure-treated wood for decades in raised beds and as posts, but on December 31, 2003, the Environmental Protection Agency (EPA) .
Raised beds make it possible to have a vegetable or flower garden even if you have poor soil.. 1 What Type of Wood is Needed to Build a Planter Box? 2 Can I .