Perennial Violas are a charming addition to any garden, giving a prolonged period of flower colour and scent to borders and rock gardens from early spring through to autumn. They are ideal companions for roses, salvias, grasses, herbaceous plants, alpines and shrubs and are useful as ground cover as well as making perfect edging plants for the front of border or spilling over pathways. Violas can be successfully mixed with summer patio plants especially in containers. As a general rule, most Violas will form clumps, although cornutas are rather more sprawling. Most will achieve a spread of just under double their ultimate height.
They prefer cool partial shade, especially during the heat of summer and thrive best in a moist, but free draining soil or compost. For best performance, dead-head spent flowers regularly, use a high potash liquid summer feed and trim the plants back in mid-summer to promote new growth and prolong flowering into the autumn. In late autumn, cut the plants back again; in the following spring give them a mulch of garden compost and feed with Blood, Fish and Bone. Beware of slugs and aphids throughout the season as both are fond of violas.