Campanula Campana Deep Blue Seed

Grow saturated violet-blue bells on upright, supported stems for cool-season bouquets and bright garden displays with Campanula Campana Deep Blue.

Ready to grow Campana Deep Blue? Follow our Campana Deep Blue Grow Guide for pelleted-seed sowing, germination and cut-flower care.

Quick Grow Facts

• Plant Type: First-year-flowering F1 cut-flower Campanula, grown as a cool-season annual
• Scientific Name: Campanula medium
• Series and Colour: Campana F1 Deep Blue
• Seed Form: Pelleted seed
• Pack Sizes: 10 and 1000 pelleted seed; live stock varies
• South African Sowing Time: Protected late-summer to autumn sowing in cool districts; use the coolest practical autumn-to-winter window in warm districts
• Position: Sun in cool weather; bright morning sun with light afternoon protection where heat is severe
• Sow Depth and Light: Surface-sow, press onto moist mix and do not cover; light is required
• Germination: Breeder benchmark 4–5 days at 20–22°C; allow up to 7–10 days for visible home-tray emergence
• Moisture: Keep the pellet and medium evenly moist through emergence, never saturated
• Pretreatment: No chilling or soaking; do not soak pellets
• Transplanting: Transplant a sturdy root-held plug after about 7–8 weeks; harden gradually for 5–7 days
• Spacing: 10–13 cm in a supported single-stem cut row; about 20–25 cm for an airy garden display
• Growth Type: Upright, top-flowering cut stems; support recommended; do not pinch for premium single stems
• Height: Approximately 76–86 cm under the matched breeder programme
• Flowering Time: Plan roughly 17–22 weeks from sowing under managed temperature and daylength
• Use and Safety: Ornamental cut flower; current label media does not declare seed-treatment status, so do not eat seed

Why Grow This Variety

• Deep Blue flowers add a distinct colour to cool-season cutting rows and bouquets.
• The matched Campana series gives upright, top-flowering stems with strong foliage.
• Pelleted seed makes the fine, light-germinating seed easier to place one per cell.
• A concentrated flowering window suits planned home cutting and small cut-flower beds.

Garden Uses

Grow Campana Deep Blue in a supported cut row or a bright, cool border with free drainage. Cut when the first bells are open and upper buds remain firm, then place stems in clean water.

Growing Notes

• Use clean cells and fine, free-draining mix. Place one pellet on the surface and leave it visible.
• Wet the pellet fully, keep 20–22°C in light through germination, then cool established seedlings towards 16–18°C.
• Do not follow the current 2 mm packet-label depth: exact Campana breeder culture requires no cover and light.
• Keep evenly moist but aerated. Dry stress causes early short stems; overwatering weakens roots and stems.
• Install support early, maintain airflow and do not pinch plants intended for premium single stems.

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.