The concept of using ollas in the garden as an irrigation system goes back thousands of years and has been used in countless cultures around the world. An olla watering system is basically any type of unglazed clay pot that is buried beneath the soil with only a small amount sticking up above the surface and filled with water. You can tell that a pot is unglazed because it will be that classic terracotta red color with no shiny finish, glaze or paint. The water then leeches out of tiny holes or “pores” in the unglazed clay and is pulled through the soil to the roots of your thirsty plants through a process called soil moisture tension. This functions much the same way as osmosis, in that the water is trying to equalize to a certain level of moisture within the soil. #olla #ollapot #oya #ollas #wateringplants