Concrete pots. They will soak up the moisture when you water the plants. So make sure they are sitting on a stand (if they're outside) or have a liner pot for the plant to be in that won't come into contact with the water directly.
This is a listing for triangle concrete pot set of 3. Dimension of each: 5 1/2 W x 2 5/8 H This is a sample set . If you want a different amount of pots just convo me. Ill set up a custom listing. Finished with a satin sealer. Cork pads attached. Feel free to convo me with any questions Thank you for shopping