Clustered Bellflower
Campanula glomerata
Also listed as Weitenwebera glomerata
Also known as Dane's Blood
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Clustered bellflower is a compact perennial that produces dense spikes of tubular, violet-blue flowers tightly clustered at the stem tips. It's a reliable bloomer that attracts pollinators and works well in borders, rock gardens, and cut arrangements.
Why grow it
Clustered bellflower offers a more compact growth habit than many other Campanula species, making it better suited to smaller borders and rock gardens where taller varieties would overwhelm neighboring plants. Its dense flower spikes provide concentrated color and structure compared to the more open, branching forms of related species like C. persicifolia. The clustered inflorescence also holds up reasonably well in cut arrangements, extending its utility beyond the garden bed.
Watch out for
This species self-seeds readily in favorable conditions, which can lead to volunteer seedlings appearing in adjacent plantings; deadheading spent flowers helps manage spread if containment is desired. Performance can vary with soil drainage and summer humidity in hot climates, where afternoon shade and well-amended, fast-draining soil improve establishment and reduce stress.
Overview
- Form
- Growth Rate
- Size
- Dormancy
- Family
- Campanulaceae
Native Range
Europe
Seasonality
Bloom Season
Season of Interest
Herb
Soft non-woody plants of the field layer.
Succession Role
Tolerances & Soil
Establishment & Care
- Establishment
- Maintenance
- Propagation
Clustered bellflower is a compact perennial that produces dense spikes of tubular, violet-blue flowers tightly clustered at the stem tips. It's a reliable bloomer that attracts pollinators and works well in borders, rock gardens, and cut arrangements.
Climate Match for your location
See how well Clustered Bellflower grows in your area.
Enter your ZIP code and we'll show you how this plant fits your local climate.
Why grow it
Clustered bellflower offers a more compact growth habit than many other Campanula species, making it better suited to smaller borders and rock gardens where taller varieties would overwhelm neighboring plants. Its dense flower spikes provide concentrated color and structure compared to the more open, branching forms of related species like C. persicifolia. The clustered inflorescence also holds up reasonably well in cut arrangements, extending its utility beyond the garden bed.
Watch out for
This species self-seeds readily in favorable conditions, which can lead to volunteer seedlings appearing in adjacent plantings; deadheading spent flowers helps manage spread if containment is desired. Performance can vary with soil drainage and summer humidity in hot climates, where afternoon shade and well-amended, fast-draining soil improve establishment and reduce stress.
Overview
- Form
- Growth Rate
- Size
- Dormancy
- Family
- Campanulaceae
Native Range
Europe
Seasonality
Bloom Season
Season of Interest
Herb
Soft non-woody plants of the field layer.
Succession Role
Tolerances & Soil
Establishment & Care
- Establishment
- Maintenance
- Propagation
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