Give seeds their best start with the Back to the Roots Self-Watering Terracotta Olla Pot. The Olla (pronounced oy-ya) is an ancient gardening tool and automatic watering system that has been used for over 4，000 years by desert farmers to help grow plants in dry， tough climates. This easy plant self watering pot creates a microporous surface that slowly releases water through osmosis as your plants need it. Now， you can bring that same ancient technology into your home and experience worry-free watering - indoors or out! Place your water pot in the soil， fill with water， cap with the rubber stopper， and refill when empty after approximately seven days. The Back to the Roots Olla Pot plant watering system is a great addition to your at-home gardening supplies and plant watering devices!