These Ariana Planters in three sizes will quickly become your favorite pots because they help keep your plants from drying out and will reduce the time you spend watering. Inside the planter is a hidden reservoir that holds approx. 1" to 3-1/2” water, depending on planter size. The self-watering inserts keep dirt and roots above the hidden reservoir line while constantly providing healthy “greenhouse-like” moisture through the evaporation process. If you’re forgetful or just not home very often, self-watering containers are a must-have. They’re also helpful if you’re growing in an area that’s not conveniently close to a water spigot, such as a balcony. Includes one each of 10", 12" and 16" planters.