Viola
Flower
Start indoors 10-12 weeks before planting out. For spring planting after last frost, that means up to 3 months growing time indoors. Otherwise, sow direct outdoors in summer to early autumn. For winter-flowering pansies in Zones 7-9, start seeds in mid to late June. For Direct sow in autumn or early spring. This variety benefits from a long exposure to cool soil.
Viola
How to Grow:
Flower
Timing:
Start indoors 10-12 weeks before planting out. For spring planting after last frost, that means up to 3 months growing time indoors. Otherwise, sow direct outdoors in summer to early autumn. For winter-flowering pansies in Zones 7-9, start seeds in mid to late June. For Direct sow in autumn or early spring. This variety benefits from a long exposure to cool soil.
Starting:
Even though the seeds are tiny, they need to be sown 5mm (¼”) deep. Keep the soil at 18-25°C (65-75°F), in complete darkness until they germinate in around 14 days. Then provide bright light to keep plants compact. Space at 15-23cm (6-9″) in the garden. Barely cover the tiny seeds. Sow in flats sunk into the ground against a north-facing wall, and cover with glass or plastic. Remove cover when seedlings emerge. Germination can take up to 50 days, so be patient.
Growing:
After germination, pansies and violas are easy. Fertilize once or twice in early growth and provide a mulch around plants to keep roots cool as weather warms. Deadhead to prevent self-sowing, particularly with Johnny-Jump-Ups. Transplant after last frost or in the autumn where winters are mild, spacing at 15-30cm (6-12”) apart. Grow in partial shade, or in full sun where summers are cool. This variety prefers rich, moist, well-drained soil with a pH of 5.5-7.0. Add well-rotted manure at transplant time.
Harvest: