One of the most colourful festivals of Kerala, Kollam Pooram is connection with the 10 day long annual festival of the Asramam Sri Krishnaswamy Maha Temple held in the month of April. The pooram which is organised on the tenth day of the festival at the Asramam maidanam attracts a large crowd. Started off as Arattu Utsavam in late 70’s, this festival shot to limelight and came to be in the present form in 1996 after the official inauguration of ceremony by the His Lordship, Sree Marthanda Varma.

The deities of the nearby temples partake in this festival and on the pooram day, in the morning, these deities come on caparisoned elephants to pay homage to the Sree Krishna deity at Ashramam. This is known as cherupooram. The grand spectacle of the festival, Kudamattam ceremony is carried out by late afternoon. It is a ritual in which 30 tuskers split into two groups of 15 each, representing Thamarakulam Sri Mahaganapathi Temple team and the Puthiyakavu Bhagavathy Temple. Kudamattam which is held to the beats of traditional melam is followed by a spectacular fireworks display. Several cultural programs like ganamela, kathakali etc are organised during the festive days.