This grower is sure of this plant identification.
Hardy bulb, flowers summer
Freesia genus. There are about 6 species of perennials which are widely grown for their bright cup-shaped, deliciously scented spring flowers. The wild species will bloom yellow, pink or purple. The medium green leaves are narrow or sword-shaped at the base of the plant.
They are half hardy, and will require a full sun with well-drained soil. You can plant in the autumn and water throughout the winter. Support with twigs or small canes.
Grown for their usually fragrant flowers, which are popular for cutting.