Giant Single Mixed Sweet William Seeds 6645. Vivid colours, early flowering and tolerant of summers heat! Large, beautiful flowers in colours of pink, rose and red. This great garden performer grows to a compact height of 25 cm (10″) making them ideal border plants. Suitable for cold-frame sowing in April to early May. This variety often self-seeds. Needs adequate moisture to germinate. Biennial hardy to Zone 3.
How to Grow
800 seed/gram. 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 last frost. Sow seed 3 mm (1/8″) deep and keep at 21 C (70 F) for the 10-20 day 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 15 cm (6″) apart in the garden.