Lechuza's Quadro LS 21 is a square planter that takes the guesswork out of watering. An integrated water reservoir feeds moisture straight to the roots, while the easy-to-read water level indicator shows exactly when to refill, so plants can go up to twelve weeks between waterings. A removable plant liner with recessed handles lets you pot, repot or rearrange plants without disturbing the display. Each planter ships with Lechuza PON mineral substrate, which aerates the roots, supplies nutrients and improves drainage. Suitable for indoor and outdoor use, the UV and frost resistant polypropylene shrugs off the weather, and a removable drain screw releases excess rainwater when it is placed outside. It measures 7.9 inches high by 8.3 inches wide by 8.3 inches deep, weighs about 2.98 pounds, is finished in white high gloss, and is made in Germany from durable, fully recyclable plastic.