Effects of Pinching and Retardants on Growth and Flowering of Celosia argentea native to Korea

This experiment was conducted to investigate growth and flowering characteristics of Celosia argentea native to Korea treated by pinching and growth retardants, diniconazole, hexaconazole and daminozide. The more increased from one to three times of pinching, the more decreased in plant height and internode length but increased number of spadix and lateral branch. Spray application of diniconazole and daminozide decreased plant height, internode length and leaflength, but increased number of spadix, number of leaves and number of lateral branch.