10 (15)cm, Mallorca Violet is a very rare, perennial, stoloniferous species endemic of Mallorca (La Serra de Tramuntana, Balearic Islands, Spain) with glossy, somewhat leathery leaves in a dense rosette. Has ornamental bright blue-purple flowers. For any humus rich, well drained soil in a partially shaded, protected spot outside or better under cold glass. In very cold winters leaves die back completely, yet the rhizome vigorously resprouts in following spring. USDA Climate Zone 6. IV-V.