Delphinium Belladonna Sky Blue Seed

Delphinium Belladonna Sky Blue is a cool-season perennial cut flower with elegant sky-blue stems for greenhouse, field or garden production.

Grow Guide: How to grow Belladonna delphiniums from seed in South Africa.

Quick Grow Facts

• Plant Type: Cool-season short-lived perennial, often managed as a seasonal cut-flower crop
• Scientific Name: Delphinium × belladonna
• Seed Form: Raw seed
• South African Sowing Time: Late summer to autumn in mild climates; protected late-winter sowing where severe frost is a risk
• Position: Full sun in cool conditions; morning sun and afternoon protection in hot districts
• Sow Depth: Cover approximately 1 mm with fine vermiculite or fine seedling mix
• Light: The packet requires a cover but gives no strict light/dark requirement; provide bright light immediately after emergence
• Germination: Approximately 10–14 days at 20–22°C
• Prechill: Not required for this supplied seed
• Spacing: Packet cut-row spacing 30 × 35 cm; allow about 45 cm in a home border
• Height: Approximately 75–90 cm; support in exposed sites
• Flowering Time: Seasonal; plan for the first cool growing cycle and allow local temperature and establishment to shift timing
• Flower Outcome: Sky-blue branching stems for borders and cutting

Why Grow This Variety

• Sky-blue stems are useful for cut flowers and cottage gardens.
• The crop suits greenhouse, field or garden production.
• Open Belladonna growth adds delicate vertical movement.
• The soft blue colour combines with white, apricot, lavender and pink flowers.

Garden Uses

Grow Delphinium Belladonna Sky Blue in cool-season cutting rows, cottage borders or protected beds for arrangements and vertical colour.

Growing Notes

• Use clean, freely drained seedling mix and a loose 1 mm cover; deeper sowing can reduce emergence.
• Keep at 20–22°C and evenly moist, never saturated; give bright light immediately after emergence.
• Pot on after true leaves, harden gradually and plant at the spacing above.
• Water at soil level, feed moderately and support stems before wind or heavy rain.
• All parts, including seed and seedlings, are toxic if swallowed. Keep away from children, pets and livestock and seek prompt medical or veterinary advice after suspected ingestion.

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.