Perennial: Parma violets are very hard to come by! Especially a white one! Fragrant, double white blooms are sometimes tipped w/ pale blue if exposed to strong sunlight. It is ideal for a woodland garden, low border, as a ground cover or in containers. Attracts butterflies. Blm time: spring. Height: around 6 inches. Exp: sun on coast/part shade elsewhere. Water: moderate. Drought tolerant. USDA Z6. (syn. VIOLA odorata 'Swanley White')