Tulip is a hardy spring flowering bulbous crop which has gained popularity due to its beauty and economic value and represents the largest geophyte world wide among all the ornamental bulbous plants. Field grown tulip normally receives sufficient low temperature during the winter to allow flowering in spring when temperatures rises and extension of growth occurs. A large bulb forcing industry is based upon the acceleration of plant growth largely by replacing the natural cold period of winter by artificially maintained low temperatures in late summer and autumn (Rees, 1969). Since very meager work has been conducted on tulip in this country especially in the state of Jammu and Kashmir, the present investigation was undertaken with the objective to find out the suitable duration of pre--cooling for tulip bulbs to advance flowering.