Bellflower Seeds - Cluster

Flower Specifications

Season: Perennial

USDA Zones: 2 - 7

Height: 8 inches

Bloom Season: Late spring to early fall

Bloom Color: Violet blue

Environment: Full sun to partial shade

Soil Type: Well-drained, alkaline soils preferred, pH 6.0 - 7.2

Deer Resistant: Yes

House Plant: No

Latin Name: Campanula Glomerata

Planting Directions

Temperature: 68F

Average Germ Time: 14 - 21 days

Light Required: Yes

Depth: Do not cover the seed but tightly press into the earth

Sowing Rate: 5 - 7 seeds per plant

Moisture: Keep seed in constant moisture until germination

Plant Spacing: 18 inches

Care & Maintenance: Bellflower

Cluster Bellflower (Campanula Glomerata Acaulis) - This smaller variety of Campanula is great for the front of the flower garden and is easily grown from Bellflower seeds. Clustered Bellflower Acaulis has compact foliage and forms a low mound of large green leaves with taller stems and violet blue blooms.

Pest resistant

This variety is both deer and rabbit resistant, perfect for edging the front of the flower border or in a large rock garden. Clustered Bellflower is also well-suited to tubs and mixed containers.

Cluster bellflower seed

How to grow

How To Grow Cluster Bellflower From Seed: Many gardeners start the Bellflower seeds in the early spring outdoors in a cold frame. If you want to get a jump start on this perennial, start the Campanula seeds indoors 6 - 10 weeks before the last frost. Press the flower seeds gently into the soil but do not cover them.

Bellflower plants may benefit from a hard trimming immediately after blooming to maintain a low, compact mound. Clustered Bellflower Acaulis is known to spread by sowing its own seeds, but it is not considered to be problematic.

Sowing Rate: 5 - 7 seeds per plant
Average Germ Time: 14 - 21 days
Keep moist until germination
Attracts bees, butterflies and hummingbirds
Depth: Do not cover the seed but tightly press into the earth