The balloon flower, Platycodon grandiflorum cv. Mariesii, is an attractive, long-lived, hardy herbaceous perennial with thick, fleshy, carrot-like roots and dark blue campanulate flowers (Fig. 1). Plant height is about 60 cm for ‘Mariesii’, 45 cm in ‘Apoyama’, and 60-90 cm for the other cultivars (1). Flower colors are blue (‘Mariesii’), white, and light pink, and flower buds mature acropetally. Before the flower opens, the petals remain fused, giving the swollen bud a ballon-like appearance. Flowers are borne erect, solitary, and terminal, but the close arrangement on the stem gives the appearance of a loose raceme. Although Platycodon usually is grown as a garden perennial, recent interest in perennial cut flowers as well as the upright growth habit, attractive buds and flowers, and long period of time that the plants remain in flower suggest that, if forced in the greenhouse, they could be used as cut flowers. This paper describes the longevity, response to preservatives, and tolerance of typical handling procedures of cut Platycodon.