Sweet William Black Adder Seeds

Sweet William Black Adder Seeds

Dianthus barbatus

Item #1323

Biennial. Deep, dark maroon flowers against purple-tinged leaves will draw you in to touch and admire. 'Black Adder' is a quick to bloom variety, blooming its first year when sown indoors. Low maintenance and beautiful in rock gardens and containers, too! Resow every year so you'll be sure to always have flowering plants. Biennial or short-lived perennial in USDA zones 3-9.

Seedling Image


Full sun to part shade

Blooms late spring

16"-20" tall

Days to Emerge:
5-10 days

Seed Depth:

Seed Spacing:
A group of
3 seeds
every 12"

When 1/2" tall,
thin to 1
every 12"

When to sow outside: 1 to 2 weeks after average last frost. Sow up until early summer for bloom the following year. Ideal soil temperature for germination is 68°-72°F.

When to start inside: 8 to 10 weeks before average last frost.

Artist: Carolyn Crawford

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