Narcissus tazetta, a peranual plant with delicate fragrancy is one of the most popular pot flowers during Chinese new year. Families buy several narcissus bulbs from market to grow by using water culture due to easy sprout. In order to stop cell divisions and obtain optimum stem length, the plant was treated with γ-ray radiation at different rates from 0, 5, 10, 20 to 40 GY at 0, 1 and 2 months before planting. Horticultural characteristics such as flowering date, length of flower stem, length of leaf, length of spike, No. of root and root length was shortened siquifienutly, but No. of flower stem and flower diameter were only sligthly affected.