A natural watering system that makes caring for your houseplants incredibly easy, this set consists of a terracotta stone and glass water reservoir. The terracotta stone transmits the moisture level of its porous walls to the soil surrounding it, creating a continuous and gradual water distribution. The process is partly managed by the plant; broad-leaved specimens extract more moisture from the soil, and will naturally speed up the flow through the terracotta. Because there is a vacuum at the top of the reservoir, the release is very gradual and a natural relationship with the moisture requirement of the plant arises: in a plant that extracts moisture from the soil more quickly, the reservoir also empties a little faster.