flower garden grow Kniphofia natural nature orange petal plant stems summer tube tubular yellow Australian coral tree brittle branches color colored colorful colors colour coloured colourful colours curved petals deciduous dicotyledonous erythrina erythrina x sykesii fabaceae finger-like flora flowers hardy hybrid invasive long petals non-seeding perennial pest scarlet flowers sterile hybrid tall tree thorny tolerant tri-foliolate tubular petals upward-pointing radial pattern vigorous vigorously growing tree weed Asian bonsai plant cultivar Flame of the Woods flower clusters folk medicine garland globular clusters green hedge plant Hindu ceremonial flower ixora Ixora coccinea Jungle Flame Jungle Geranium landscape plant leaves medicinal needle flower ornamental plant popular prolific bloomer tropical tubular 4-petaled flowers red rubiaceae scarlet bonsai-plant cluster Flame-of-the-Woods flower-clusters folk-medicine globular-clusters golden hedge-plant Hindu-ceremonial-flower Jungle-Flame Jungle-Geranium landscape-plant needle-flower ornamental ornamental-plant prolific-bloomer tubular-4-petaled-flowers