Onam is the biggest and most popular harvest festival in Kerala, India. People believe that the spirit of their King Mahabali will make a visit on the occasion of Onam. Therefore people of Kerala consider it as auspicious to make Pookkalam, meaning flower carpet to welcome their beloved King.
Pookkalam is an intricate and colourful flower arrangement laid on the floor. This tradition of decorating Pookkalam is very popular in Kerala which is followed as a custom in every family during the ten day long Onam festival celebrations.