Dianthus Sweet White Seeds

Dianthus Sweet White Seeds produce fragrant, long-lasting white flower clusters on strong stems for supported cut-flower rows. The series flowers in its first year without vernalisation.

Ready to grow fragrant white Sweet William stems? Follow our step-by-step Sweet White Dianthus Grow Guide for pelleted-seed sowing, germination, spacing, support and harvest.

Quick Grow Facts

• Plant Type: First-year-flowering Sweet William, commonly grown as a cut-flower crop
• Scientific Name: Dianthus barbatus
• General Sowing Time: Cool season; use the regional guide for the local sowing window
• Position: Full sun to light partial sun
• Sow Depth: Cover lightly with about 1 mm of fine mix or vermiculite
• Spacing: 25–36 cm in a home border; intensive supported rows use a separate density plan
• Germination: 3–5 days at 18–20°C under controlled conditions; packet/home window 14–21 days
• Seed Form: Pelleted seed; sow intact
• Germination Light: Optional
• Height: 46–91 cm, strongly affected by season and protection

Why Grow This Variety

• White flowers and fragrance bring a classic garden display.
• Strong, straight stems suit supported cut-flower rows.
• A later flush is only reliable when regrowth develops through suitable cool conditions.
• Plants flower in their first year without vernalisation.

Garden Uses

Use Sweet White in garden displays and cut-flower plantings where its uniform stems can be gathered for floral arrangements.

Growing Notes

• Use the cool-season window in the linked regional guide.
• Sow one intact pellet per cell, cover lightly and keep at 18–20°C.
• Use 25–36 cm home-border spacing or a named intensive supported-row plan.
• Support stems and harvest when at least three flowers in a cluster are open.

Brought to you by Ubuntuberg Seeds, where our mission is to cultivate humanity & harvest unity. Ubuntuberg Seeds: the highest quality seed stock in all of Southern Africa, sourced from sustainable farms, guaranteeing you the best quality seed stock.