Oxford Blue' forms beautiful mats of purple-tinged leaves. In spring, this free-flowering groundcover boasts abundant iridescent blue flowers. It grows to about 25cm high and 30cm wide. It is a vigorous and easy-to-grow cultivar. Perfect for a rock garden, alpine house, or pot, and is also suitable for the edge of a mixed herbaceous border. Provide moderately fertile to poor, well-drained soil in full sun.