To resolve your dilemma, line the flower pots with burlap. Mostly made of jute, also available in hemp and flax variants, burlap is a breathable fabric that is porous enough to allow the extra water ...
Next, take the placemat outside and give them a shake! Shake off the excess burlap debris. The hardest part of this project is choosing the best stencil for your Placemat as there are gorgeous ones.