1 / 3Key characteristics
- Family
- Campanulaceae
- Height
- 3 to 5 feet
- Width
- 1 to 3 feet
- Flower color
- Pale blue, lavender, or white
- Foliage color
- Green, lance-shaped leaves
- Bloom time
- Early summer to mid-summer
- Light
- Full sun to partial shade
- Water
- Moderate; prefers well-drained soil
- Maintenance
- Low; deadhead to encourage prolonged blooming, cut back after flowering
- Growing zone
- USDA zones 5 to 7
- Wildlife
- Attracts bees, butterflies, and other pollinators
Perennials
Campanula lactiflora
Milky Bellflower
Campanula lactiflora, commonly known as milky bellflower, is a graceful perennial that produces clusters of soft lavender-blue or white, star-shaped flowers. Blooming from early to mid-summer, the delicate, bell-shaped flowers appear in dense clusters atop slender stems, creating a light, airy display that adds vertical interest to garden borders.
Native to the Caucasus region and parts of Turkey, Campanula lactiflora is prized for its long blooming period and elegant floral display.
Works well in
- Borders
- Cottage Gardens
- Pollinator Gardens
- Cut Flower Gardens
Companion plants
Lungworts · Daylilies · Japanese anemones · Bleeding hearts · Catmint · Heucheras
Design tip
Summer flowers carry the middle of the season, so place it where the bed needs color once spring bulbs fade. It takes sun or light shade, which makes it useful along the changing light of a bed edge or a partly shaded border.
Where to see it
This plant can be seen in the perennial border at the Bellevue Botanical Garden.
More perennials

Iris douglasiana
Douglas Iris
Blooms variable shades including blue, purple, lavender, and white, often with darker veining and a yellow signal
Full sun to partial shade

Aquilegia ‘Spring Magic Blue & White’
Spring Magic Blue & White Columbine
Blooms deep blue and white
Full sun to partial shade

Scabiosa columbaria 'Butterfly Blue'
Butterfly Blue Pincushion
Blooms soft lavender-blue
Full sun to partial shade

Scabiosa caucasica 'Perfection Blue'
Perfection Blue Pincushion Flower
Blooms large soft lavender blue pincushion flowers with lighter center
Full sun