Ollas (or Oyas) is a traditional, natural way to conserve water, save time and grow better plants. Bury them in the ground, fill them with water and watch your plants thrive! It is a porous terracotta pot that you bury in your planter and fill with water. Moisture slowly seeps out through the walls to water your plants directly at the roots. Over time, the roots attach to the outside of the Olla and draw water out as they need it. Your plant takes exactly what it needs, no more and no less. Simple! Each Olla is individually packaged with an illustration card.