Alphabetical Plant Listing

Campanula glomerata 'Superba' (Clustered Bellflower)

Clustered Bellflower 'Superba', Bellflower 'Superba', Danesblood 'Superba'


Vigorous and charming, award-winner Campanula glomerata 'Superba' (Clustered Bellflower) is a rhizomatous perennial with upward facing, bell-shaped, rich violet-blue flowers held in dense clusters counting up to 15 flowers. Blooming mostly from late spring to early summer, the flowers are borne atop sturdy leafy stems above a spreading rosette of ovate to lance-shaped, toothed, green leaves. A dashing focal point in the garden, this Bellflower is perfect for a sunny or partly shaded herbaceous border.

  • Winner of the Award of Garden Merit of the Royal Horticultural Society.
  • Grows in sturdy clumps, up to 28 in. tall (70 cm) and 24-36 in. across (60-90 cm). It has a tendency to spread rapidly in rich soils, forming a wide colony.
  • Thrives in full sun or part shade, in average, medium, well-drained soils. Prefers part shade in warmer climates. Needs regular moisture!
  • Ideal for beds, borders, cottage gardens and naturalized areas. Plant in groups for best visual impact! A vigorous spreader, this Campanula is also a good groundcover. Allow plenty of space when planting, or plan to reduce the size each spring. Campanula glomerata makes excellent cut flowers that last up to 2 weeks in a vase!
  • Easy to grow, virtually disease and pest free, this low care perennial is also deer and rabbit resistant and adored by hummingbirds, butterflies and bees.
  • Cut back after flowering, both to prevent self-seeding and to encourage a second flush of flowers.
  • Easily divided in spring or fall.
  • Propagate by division in spring or autumn or take basal cuttings in spring

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Requirements

Hardiness 3 – 8
Heat Zones 1 – 8
Climate Zones 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, A1, A2
Plant Type Perennials
Plant Family Campanula - Bellflowers
Exposure Full Sun, Partial Sun
Season of Interest Spring (Late)
Summer (Early)
Height 2' – 3' (60cm – 90cm)
Spread 2' – 3' (60cm – 90cm)
Spacing 24" – 36" (60cm – 90cm)
Water Needs Average
Maintenance Low
Soil Type Chalk, Loam
Soil pH Alkaline, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Cut Flowers, Plant of Merit, Showy
Tolerance Deer, Rabbit
Attracts Butterflies, Hummingbirds
Garden Uses Beds and Borders, Ground Covers, Underplanting Roses and Shrubs
Garden Styles Informal and Cottage, Prairie and Meadow

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While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.


Requirements

Hardiness 3 – 8
Heat Zones 1 – 8
Climate Zones 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, A1, A2
Plant Type Perennials
Plant Family Campanula - Bellflowers
Exposure Full Sun, Partial Sun
Season of Interest Spring (Late)
Summer (Early)
Height 2' – 3' (60cm – 90cm)
Spread 2' – 3' (60cm – 90cm)
Spacing 24" – 36" (60cm – 90cm)
Water Needs Average
Maintenance Low
Soil Type Chalk, Loam
Soil pH Alkaline, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Cut Flowers, Plant of Merit, Showy
Tolerance Deer, Rabbit
Attracts Butterflies, Hummingbirds
Garden Uses Beds and Borders, Ground Covers, Underplanting Roses and Shrubs
Garden Styles Informal and Cottage, Prairie and Meadow

Great Plant Combination Ideas with Campanula - Bellflowers

Guides with Campanula - Bellflowers

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