Wooden planter boxes add natural beauty to urban spaces, but they require proper protection to withstand the elements. Start by choosing the right wood - cedar, redwood, and teak naturally resist moisture and insects. Apply a food-safe sealant or wood preservative to all surfaces, including the interior and bottom. Reapply this protective coating annually or as recommended by the manufacturer.
Ensure adequate drainage by drilling holes in the bottom and adding a layer of gravel or stones before soil. This prevents water from pooling and causing rot. Consider lining the interior with landscape fabric to create a barrier between the soil and wood while still allowing drainage.
Elevate your planter boxes slightly using feet or bricks to promote air circulation and prevent ground moisture absorption. During extreme weather conditions, move planters to sheltered areas or use protective covers. Regular maintenance includes inspecting for signs of rot, reapplying sealant, and cleaning debris from the surface.
For added protection, you can install metal or plastic liners inside the wooden boxes. This creates an additional moisture barrier while maintaining the attractive wooden exterior. Avoid using pressure-treated wood if growing edible plants, as chemicals can leach into the soil.
With these protective measures, your wooden planter boxes can withstand rain, sun, and temperature changes while maintaining their structural integrity and appearance for years to come.