Dianthus barbatus ‘Giant White’
Commonly known as Sweet William, Dianthus barbatus is fabulous for filling your garden with long lasting, fragrant early summer blooms and for a splash of colour you can’t beat this ‘Giant White’.
Sown in early Autumn for blooms the following Spring. I find in my garden it comes back for another year, all the while providing huge rosettes of evergreen foliage.
Sweet William or Dianthus barbatus ‘Giant White’ flowers for me from late May and I’m still picking stems as late as early August.
Beautifully scented Dianthus barbatus ‘Giant White’ has long strong stems and a vase life of more than a week and in the garden, I find it follows on beautifully from Hesperis matronalis (Sweet Rocket) another biennial that blooms even earlier!
How to grow:
Because plants need to be exposed to cool winter conditions (like Tulips) to initiate flowering I Autumn sow Sweet William in either an unheated greenhouse or cold frame, but they will be just as happy in a sheltered spot outside. For more detailed growing instructions join our ‘Grow Along’ on Instagram
Variety: Dianthus barbatus
Type: Hardy Annual
Position: Full sun in free draining soil.
Sow: Spring or Autumn
Germination: Up to 30 days
Height: 60 cm
Pinching: Not required
Harvest: May/June – July
Seeds per packet: 200
Cutting /Vase Life:
Sweet Williams have an exception vase life, cut flowers can last up to 10 days. Re-fresh the water regularly.
Place flowers straight into ready buckets of water. We rest our stems for a few hours in water, this is called conditioning.