Buddleja (Butterfly Bush) - A vigorous growing semi-evergreen shrub, grows 12 to 15 feet tall and wide with 8-10 inch long silvery-gray leaves. Scented lavender-blue flowers with orange eyes first appear in spring and can rebloom until fall. Removal of spent flower spikes during this period will encourage additional bloom. Full sun to bright light shade. Becomes sparse and flowers less if not grown in full sun. Low water, does not tolerate wet soils. Hardy to 10° F.