Urban eco-pioneer, Anais Dervaes, demonstrates an ancient & efficient method of irrigation using ollas (unglazed clay pots) which are gradually making a comeback in our water challenged world.
The principle behind the olla is that unglazed terracotta is porous, and when buried in the ground will slowly seep moisture to the surrounding soil and spread via capillary action. Any plants nearby have access to a steady stream of water. Apparently ollas have been used by the Spanish for centuries and were brought to the arid American south-west by the colonisers. The system also developed independently in China, Zimbabwe, Iran and Pakistan, and the Romans were known to irrigate their grape vines using this method.
If you would like to purchase an olla for your garden you can buy them in different shapes and sizes at www.pathtofreedom.com/shop