Gardenia augusta Large double White flower (Rubiaceae)
Gardenia radicans (Rubiaceae)
Garrya elliptica 'James Roof' Greyish green flower (Catkins) (Garryaceae)
Gelsemium sempervirens Yellow flower (Gelsemiaceae)
Gentiana x hybrid 'Blue Herald' Trumpet Blue flower (TC) (Gentianaceae)
Gentiana x hybrid 'Blue Herald’ (white form of)' White flower (Trumpet Gentian (TC)) (Gentianaceae)
Geranium incanum Pink mauve flower (Carpet Geranium) (Geraniaceae)
Gordonia axillaris Single Camellia like Creamy white flower (Theaceae)
Gordonia yunnanense 'Silk Screen' White flower (Theaceae)
Gunnera manicata (Ornamental Rhubarb) (Gunneraceae)
