“Giant Single Mixed” Sweet William 6645


SKU: 5c3da1ae0ac5 Categories: ,


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.

Additional information

Weight N/A
Dimensions N/A
Blooming Season Begins



Days to Emergence


Growth Habit


Frost Tolerance

Degree of Difficulty


Family Name



, , ,

Suggested Uses



Welcome to our new site! If you have any questions or feedback we would love to hear it! Leave Feedback. Dismiss