Once water starts seeping out of the overflow drain hole the reservoir is full. Always make sure there is a clean passage way out of the drainage hole to ensure water can escape.
The Overflow drain hole is manufactured/pre-drilled in all of our window boxes and Patio Planters.
Our Tall Planters require you to drill your own drainage hole. The hole is not pre-drilled in our tall planters so the you can best decide placement based on how you choose to use your planter. Instructions for placement of these drain holes is included below.
Window Box Overflow Drain Hole
Patio Planter Overflow Drain Hole
Tall Planter Drainage Hole Placement