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Native alternative(s) for Campanula glomerata:
Campanula divaricata Campanula divaricata
Plants that fill a similar niche:
Viola pedata Viola pedata
Viola sororia Viola papilionacea
Viola striata Viola striata

Clustered Bellflower Campanula glomerata

Other Common Name(s):

Phonetic Spelling
kam-PAN-yoo-lah glo-mer-AY-tah
Description

Campanula glomerata, or Clustered Bellflower, is a herbaceous, clumping, perennial that grows well in average, medium moisture, well-drained soil in full sun or part shade. Most species of Campanula perform best in areas with cool nights, but Clustered Bellflower will grow in the southeast in moist soils and partial shade. If your summer climate is cool, site the plant in full sun; however, if the summer climate is hot, you will have more success with a site in partial shade. Regardless of the site, the plant requires regular moisture.

The plant is quite showy, with densely packed clusters of light blue flowers. To encourage flower blooms, promptly deadhead, or remove, spent flower stems. Bellflower naturalizes by rhizomes and can be invasive, particularly in moist soils. To keep the plant growing vigorously while preventing it from spreading indiscriminately, divide the clumps in the fall every 3 to 5 years. Plants naturalize by rhizomes and occasionally, small colonies of plants are produced from the long rhizomes, particularly in moist soils

Members of the genus Campanula support the Plasterer bee (Colletes brevicornis). The Bellflower is also known to tolerate deer.

Diseases, Insects, and Other Plant Problems:

No serious insect or disease problems, except for occasional snails and slugs.

See this plant in the following landscape:
Cultivars / Varieties:
  • 'Joan Elliott'
    Large violet flowers.
  • 'Schneekrone' ('Snow Crown')
    Large white flowers.
  • 'Superba'
    Vigorous, 2 feet high, rich blue flowers
'Joan Elliott', 'Schneekrone' ('Snow Crown'), 'Superba'
Tags:
#hummingbird friendly#full sun tolerant#lavender#white flowers#nectar plant#specialized bees#spreading#summer flowers#deer resistant#rhizomes#herbaceous perennial#naturalizes#alkaline soils tolerant#pollinator plant#clumping#partial shade tolerant#bee friendly#perennial#wildlife friendly
 
Cultivars / Varieties:
  • 'Joan Elliott'
    Large violet flowers.
  • 'Schneekrone' ('Snow Crown')
    Large white flowers.
  • 'Superba'
    Vigorous, 2 feet high, rich blue flowers
'Joan Elliott', 'Schneekrone' ('Snow Crown'), 'Superba'
Tags:
#hummingbird friendly#full sun tolerant#lavender#white flowers#nectar plant#specialized bees#spreading#summer flowers#deer resistant#rhizomes#herbaceous perennial#naturalizes#alkaline soils tolerant#pollinator plant#clumping#partial shade tolerant#bee friendly#perennial#wildlife friendly
  • Attributes:
    Genus:
    Campanula
    Species:
    glomerata
    Family:
    Campanulaceae
    Life Cycle:
    Perennial
    Recommended Propagation Strategy:
    Division
    Seed
    Country Or Region Of Origin:
    Europe and temperate Asia
    Wildlife Value:
    Food source for the Plasterer bee (Colletes brevicornis).
    Play Value:
    Attractive Flowers
    Attracts Pollinators
    Colorful
    Easy to Grow
    Edibility:
    Leaves have a mild flavor with a pleasant sweetness and can be used as an ingredient in salads
    Dimensions:
    Height: 0 ft. 6 in. - 2 ft. 6 in.
    Width: 1 ft. 0 in. - 3 ft. 0 in.
  • Whole Plant Traits:
    Plant Type:
    Herbaceous Perennial
    Perennial
    Woody Plant Leaf Characteristics:
    Deciduous
    Habit/Form:
    Clumping
    Erect
    Spreading
    Growth Rate:
    Rapid
    Maintenance:
    Low
    Texture:
    Medium
  • Cultural Conditions:
    Light:
    Full sun (6 or more hours of direct sunlight a day)
    Partial Shade (Direct sunlight only part of the day, 2-6 hours)
    Soil Texture:
    Loam (Silt)
    Sand
    Soil pH:
    Alkaline (>8.0)
    Neutral (6.0-8.0)
    Soil Drainage:
    Good Drainage
    Moist
    Available Space To Plant:
    12 inches-3 feet
    NC Region:
    Coastal
    Mountains
    Piedmont
    USDA Plant Hardiness Zone:
    3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b
  • Fruit:
    Fruit Color:
    Cream/Tan
    Fruit Type:
    Capsule
    Fruit Description:
    Each flower is replaced by a globoid seed capsule that contains several small seeds.
  • Flowers:
    Flower Color:
    Blue
    Purple/Lavender
    White
    Flower Inflorescence:
    Head
    Raceme
    Flower Value To Gardener:
    Good Cut
    Long Bloom Season
    Showy
    Flower Bloom Time:
    Summer
    Flower Shape:
    Bell
    Cup
    Funnel
    Star
    Flower Petals:
    4-5 petals/rays
    Flower Size:
    1-3 inches
    Flower Description:
    Blooms May through July. Upward facing flowers bloom in spherical terminal clusters atop smaller-leaved stems that rise 12 to 18 inches above the basal clump. Smaller flower clusters simultaneously bloom in the upper leaf axils. Common name refers to the densely packed inflorescences, each having a cluster of up to 15 flowers.
  • Leaves:
    Woody Plant Leaf Characteristics:
    Deciduous
    Leaf Color:
    Green
    Leaf Type:
    Simple
    Leaf Arrangement:
    Alternate
    Leaf Shape:
    Lanceolate
    Ovate
    Leaf Margin:
    Dentate
    Hairs Present:
    Yes
    Leaf Length:
    3-6 inches
    Leaf Description:
    Dense foliage clump of ovate to lance-shaped, toothed long-stalked, 5 inch long basal leaves.
  • Stem:
    Stem Color:
    Brown/Copper
    Green
    Stem Is Aromatic:
    No
    Stem Form:
    Straight
    Stem Surface:
    Smooth (glabrous)
    Stem Description:
    Flowers bloom in spherical terminal clusters atop smaller-leaved stems rising above the basal clump to 12-18 inches tall. Stem leaves (to 3 1/2 inches long) are narrower and shorter than the basal leaves.
  • Landscape:
    Landscape Location:
    Container
    Naturalized Area
    Rock Wall
    Landscape Theme:
    Butterfly Garden
    Children's Garden
    Cottage Garden
    Pollinator Garden
    Rock Garden
    Design Feature:
    Accent
    Border
    Mass Planting
    Attracts:
    Bees
    Butterflies
    Hummingbirds
    Pollinators
    Songbirds
    Specialized Bees
    Resistance To Challenges:
    Deer
    Heat
    Rabbits