In annual flower crops like African marigold, seed yield is mainly dependent on number of flower bearing branches which can be manipulated by arresting the vertical growth of plants and encouraging side shoots by means of apical bud pinching or growth retardant. For enhancement of seed yield and quality of any flower crop, pinching and growth regulators can be used besides usual cultural and management practices. The application of growth retardant and pinching helps to increase the yield of good quality seed of different flower crops.