Convolvulus cneorum - flower
Convolvulus cneorum (Bush Morning Glory) - A fast growing evergreen shrub that forms a rounded 2 to 3 foot tall by 3 to 5 foot wide mound with 1 to 2 inch long silvery-green lance-shaped leaves. White pentagon funnel-shaped flowers, 1 1/2 to 2 inches wide, with yellow centers bloom from pink buds in the late spring through early fall on loose panicles, often in such abundance to nearly cover the plant. It performs best in full sun or part shade with occasional watering and absolutely needs a well-draining soil and not only tolerates, but prefers, alkaline soils. It is hardy to about 15 degrees F.