New and distinct double-flowering New Guinea Impatiens (NGI) plants are disclosed. Double-flowering NGI plants produce one or more flowers with at least seven full or partial petals per flower. Double-flowering NGI plants are disclosed in which substantially all the flowers produced by the plant have at least 7 full or partial petals. The double-type flower characteristic has been successfully bred into all single-type (5 petals per flower) or semi-double-type (6 petals per flower) NGI genetic backgrounds thus far tested. The double-type flower characteristic has been combined with many desirable NGI traits including different flower colors, leaf colors, leaf variegation, and growth habits. Methods for the reliable breeding of the double-type characteristic into diverse single-type or semi-double-type NGI genetic backgrounds, as well as methods for increasing the degree of doubleness per flower or plant, are disclosed.
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