Campanula pyramidalis (Chimney Bellflower)

Seed Treatment (Stratification & Preparation)

  1. Cold Stratification

    • Mix seeds with moist sand or a damp paper towel inside a sealed plastic bag.

    • Store in the refrigerator at 35–40°F (1–4°C) for 2–4 weeks.

    • Ensure they remain moist but not waterlogged. 

Sowing Instructions

  • Best Sowing Time: Early spring (indoors) or late spring/early summer (outdoors).

  • Seed Depth: Do not cover with soil—light is needed for germination.

  • Soil: Well-draining, loamy or sandy soil with a pH of 6.0–7.5.

  • Light Requirement: Full sun to partial shade.

  • Moisture: Keep soil evenly moist but not waterlogged.

  • Temperature: Germination occurs best at 65–70°F (18–21°C).

  • Germination Time:14–30 days. 

Aftercare & Transplanting

  • Once seedlings have 2–3 sets of true leaves, thin or transplant them to their final location.

  • Space plants 12–18 inches apart for healthy growth.

  • Water regularly until established, then reduce watering (drought-tolerant when mature).

  • Deadhead spent flowers to prolong blooming.

By following these steps, you’ll successfully grow Chimney Bellflower, a stunning biennial/perennial with tall spires of bell-shaped flowers! ??

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