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A new spray chrysanthemum (Dendranthema grandiflorum) cultivar “Green Witch” was developed from a cross between ‘S04161’ and ‘S04109’ by selection of seedlings and lines at the Flower Research Institute, Gyeongnam Agricultural Research and Extension Services (ARES) from 2004 to 2008. Its characteristics were investigated three times from 2006 to 2008 under condition of forcing culture in spring and retarding culture in autumn. The natural flowering time of “Green Witch” was October 19th, and year-round production was possible by day length treatment. Its capitulum was 3.2cm in diameter, and had 15.9 head per stem in autumn. Its ray floret was green central zone. To flower in the short day condition, for “Green Witch” was about 44 days in spring, and “Green Witch” showed the vase life of 25.3 days in autumn. This cultivar was registered for a commercialization in 2008.