Pookalam is an intricate and colorful arrangement of flowers laid on the floor. Tradition of decorating Pookalam is extremely popular in Kerala and is followed as a ritual in every household during ten-day-long Onam celebrations. 'Pookalam' consists of two words, 'poov' meaning flower and 'kalam' means color sketches on the ground. It is considered auspicious to prepare Pookalam, also known as 'Atha-Poo' during the festival of Onam. People believe the spirit of their dear King Mahabali visits Kerala at the time of Onam. Besides making several other arrangements, people, especially adolescent girls prepare elaborate Pookalams to welcome their most loved King.