Abstract: ‘Xiahua 6’is a heat-resistant and rareripe new hybrid cauliflower bred by the self-incompatibility. It is suitable to be cultivated in both summer and autumn. W ith the mature period ranging from 50 to 55 days. Reginal cultivation experiment had been take from 2001 to 2003. The yield is increased 20.5% comparing with the same rareripe variety and‘Xiahua 6’had better quality. The fruitwith the partly loose structure is semicircle and white but the stalk is green. The average mass of single fruit is about 0.50 to 0.85 kg. So we
can harvest 30 to 45 t/hm² if the p lant density is 45 000 - 49 500 per hectare. It tastes well and has strong resistance to some diseases.

Key words: Cauliflower, Heat-resistant, Rareripe, Hybrid variety