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What thickness of wood is recommended for building durable cedar landscape planter boxes?
When constructing cedar landscape planter boxes, selecting the right wood thickness is crucial for durability and stability. For long-lasting outdoor planters, experts recommend using cedar boards with a thickness of at least 3/4 inch (19 mm). This thickness provides sufficient strength to withstand soil pressure, weather conditions, and frequent watering without warping or cracking.
For larger planter boxes (over 24 inches in height or width), consider upgrading to 1-inch (25 mm) thick cedar for added structural integrity. Cedar is an excellent choice due to its natural resistance to rot and insects, but proper thickness ensures your planter boxes remain sturdy for years.
Thinner boards (1/2 inch or less) may save costs initially but are prone to bending and deterioration over time. Always use high-quality, kiln-dried cedar and seal the interior with a waterproof liner to further extend the lifespan of your landscape planter boxes.
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