Jasminum nudiflorum Jasminum nudiflorum Common name(s): Winter Jasmine Blooming time: winter to spring Blooming colors: yellow Height: 2 to 5 m Origin: China Hardiness zone (USDA): Z7 – up to -15 °C Family: Oleaceae Related plants:Forsythia × intermedia Ligustrum vulgare Syringa vulgaris