Flower Specifications
- Season: Perennial
- USDA Zones: 3 - 8
- Height: 20 inches
- Bloom Season: Summer
- Bloom Color: Purple
- Environment: Full sun
- Soil Type: Moist, well-drained soils, pH 5.8 - 6.8
Planting Directions
- Temperature: 70F
- Average Germ Time: 14 - 28 days
- Light Required: Yes
- Depth: Do not cover
- Sowing Rate: 3 - 4 seeds per plant
- Moisture: Keep moist until germination
- Plant Spacing: 12 - 20 inches
- Care & Maintenance: See: Bellflower
Bellflower (Campanula Glomerata Superba) - Bellflower seeds are so rewarding to grow and they establish into a hardy, reliable perennial that makes a great addition to the flower bed. Adored by hummingbirds and butterflies, Bellflower Superba blooms significantly in early summer on compact plants. This purple Campanula Glomerata spreads and adds a very unique look to any garden or bed. It establishes nicely from flower seed. Once it's established, the plants need to be divided every 3-4 years. It prefers full sun in moist fertile soil. Campanula Superba can reach 20 inches in height, and it makes a great cut flower.
Bellflower seeds requires light to germinate, so don't cover them with soil. Instead, lightly press the flower seeds into the soil to ensure good contact and keep moist until germination. If starting indoors, use a seed-starting mix and bottom water so mold won't form on the mix. Campanula seeds can also be sown directly outdoors in prepared beds after last frost.