Urban planter boxes bring greenery to city spaces but require specific care to prevent rot and ensure longevity. The primary enemy is persistent moisture. To combat this, ensure excellent drainage. Drill multiple holes in the bottom and use a layer of gravel or pot shards before adding soil. Elevating the box with feet allows air circulation underneath.
Material choice is crucial. Naturally rot-resistant woods like cedar, redwood, or cypress are ideal. If using other woods, apply a non-toxic, water-sealant preservative to the interior. Avoid lining with plastic, which can trap moisture; use a permeable landscape fabric instead.
Regular maintenance is simple but effective. Allow the soil surface to dry slightly between waterings. Annually, empty the box to inspect the interior for soft spots. Sand and reapply sealant to any weathered areas. In winter, empty soil to prevent freeze-thaw cycles from splitting the wood. With these steps, your planter boxes will remain healthy and rot-free for seasons to come.