Sweet William 'Super Duplex' Mix Seeds (Dianthus barbatus Mix Double)

Sweet William 'Super Duplex' is a biennial flower prized for its lush, double-layered blooms in a mix of vibrant colors. Its dense flower clusters and upright growth make it perfect for borders, cottage gardens, and cut flower arrangements, adding a bold and elegant splash of color.

What Makes It Special

• Produces dense, double-layered flower clusters

• Vibrant mix of colors for eye-catching displays

• Compact, upright growth ideal for borders and mixed beds

• Excellent for cut flowers with long-lasting blooms

Key Features

• Botanical name: Dianthus barbatus

• Common name: Sweet William 'Super Duplex'

• Seed count: Approx. seeds per pack

• Height/Spread: 30–50 cm tall, 20–30 cm spread

• Position: Full sun to partial shade, well-drained soil

• Flowering period: Second year; late spring to early summer

• Lifespan: Biennial

Ideal For

• Borders, cottage gardens, and mixed flower beds

• Cut flower arrangements

• Pollinator-friendly gardens

• Containers and patio planting

Sowing Instructions

1. When to sow:

   • Indoors: February–April for transplanting

   • Outdoors: April–May in well-prepared soil

2. How to sow:

   • Sow seeds thinly on the surface and press lightly into soil

   • Keep soil moist until germination (10–20 days)

3. Transplant/Thin: Space seedlings 20–30 cm apart

4. Care: Protect young plants from frost; deadhead spent flowers to prolong bloom