A new variety 'Suni' was released from the cross between 'Ujeong' and 'Asadal' by the breeding laboratory of the Korea Forest Research Institute (KFRI) in 2001, and the preliminary, advanced and regional trials for evaluation and selection of this variety, were carried out from 1997 to 2001. The progenies were annually managed with transplanting and 5 to 6 times in weeding. Leaves, flowers, branches and growth characteristics on selected trees were investigated. Results of morphological characteristics showed that 'Suni' has simple flower in open type of flower and funnel shape in flower type. The diameter of flower is 61.9 mm and very small as compared with contrastive cultivar, 'Yeongkwang'. The petal is fully folded as compared with contrastive cultivar and diameter of eye zone is 19.7 mm. Leaf type is in oval shape, and leaf length and width are short (58.3 mm) and narrow (34.4 mm), respectively. Leaf width to width of leaf shoulder ratio having 1.7 is very wider as compared with contrastive cultivar having 1.4. Shape of leaf margin, depth of leaf margin and shape of base of the variety are serrate, medium and rounded, respectively. Quantity of bloom is in normal condition and changes in the number of flowers by seasons are small, also, its blossom comes into summer. 'Suni' having very small flowers could be useful for a good ornament as a dwarf variety.