Sweet William Super Duplex Mix - Ontario Seed Company

Dianthus barbatus

Big, extra double flowers in reds, pinks, rose and whites with an old-fashioned charm. Selected by growers for a very high proportion of double to single flowers. Tall 40cm (16") plants are crammed with flowers that start appearing in early summer. Suitable for cold-frame sowing in April to early May. Often self-seeds. Needs adequate moisture to germinate. Biennial Hardy to Zone 3.

How to Grow

Seed can be directly sown in the garden in a sunny spot in mid to late May for flowering in the following year. Seed can be started indoors in a soil-less mix 8 weeks before the last frost. Sow seed 3mm (1/8") deep and keep at 21C (70F) for the 10-20 days germination period. After germination, grow on at a slightly cooler temperature before hardening off and transplanting outside to a sunny spot after the danger of frost has passed. Space plants 25cm (10") apart in the garden.

Perennial.

Approx. 500 seeds/pkt.