Sweet William 'Super Duplex Double'

Dianthus barbatus

How to grow Sweet William 'Super Duplex Double'

  • Full Sun

  • High

Try to plant in a location that enjoys full sun and remember to water often. Super Duplex Double is generally regarded as a very hardy plant, so this plant will tend to survive through freezing conditions.

Growing Super Duplex Double from seed

By our calculations, you should look at sowing Super Duplex Double about 49 days before your last frost date.

Transplanting Super Duplex Double

Super Duplex Double is very hardy, so ensure you wait until all danger of frost has passed in your area before considering planting outside.

Harvesting Super Duplex Double