The aims of this study were to analyze dynamic stem elongation standard cut-chrysanthemum (Dendranthema grandiflorum) with different photoperiod levels. Standard cv. Baekma was grown at a 16 hr until 23 days after planting, that photoperiods 8, 10, 12, 14, and (8H, 10H, 12H, 14H, 16H) applied using fluorescent lights in plant factory. long-day treatments 14H 16H produced no flower buds the 8H t...