ARIANA COLLECTION by Bloem: The Ariana planter will quickly become one of your favorite pots because it helps keep your plants from drying out and will reduce the time you spend watering. Inside the planter there is a hidden reservoir located at the bottom of your pot and holds approx. 1-3.5 (depending on planter size) of water. This self-watering insert keeps dirt and roots above the hidden reservoir while constantly providing healthy greenhouse-like moisture through the evaporation process. How a Self-Watering Planter Works: When big drainless pots are given more water than the plant can use right away, the water settles to the bottom and the potting mix begins to rot, eventually becoming a stinky, waterlogged mess that will kill plant roots. But inside Bloem's self-watering planter, the potting mix is held above the water line by a sturdy screen. The water chamber is connected by small porous channel filled with soil, which then acts as a wick. As water is used by the plant or evaporates from the surface of the soil, capillary action draws more water up from below. The soil has just the right amount of water all the time, but also maintains air pockets, which the plant roots need to stay healthy.