Which side of a cork mat goes down?
A: The cork side goes face up (to absorb any water drip) and the plastic goes face down.
What can I use instead of plant saucers?
You can also use cork pads as saucers under small planters with plants that don’t require a lot of water, like succulents; I use them under my cachepots for the same reason.
What do you put under house plants?
Try using a plastic pot saucer and pebbles to create a humid base for a houseplant that craves moisture. Fill the bottom of the saucer with a layer of pebbles, then add about a half an inch of water. This keeps the pot from sitting in water, but makes moisture accessible, providing extra humidity.