PONCIRUS TRIFOLIATA (Hardy Orange) Bushy evergreen shrub or tree with cup shaped white fragrant flowers up to 2 inches across which appear in spring or summer and often again in fall. This tree has oranges which are edible but are not sweet. Great for jams. Up to 15 feet tall and wide. Hardy in zones 5-9. Recommended care: Grow in fertile, well drained soil in full sun and part shade. Evergreen in warmer climates and deciduous in zone 7 or below.