Campanula, Canterbury Bells, Blue Cup and Saucer 'Caerulea'

Campanula medium var. calycanthema

Family
Campanulaceae (kam-pan-yew-LAY-see-ee)
Genus
Campanula (kam-PAN-yoo-luh)
Synonym
Sun Exposure
Full Sun
Foliage
Herbaceous
Height
24-36 in. (60-90 cm)
Spacing
9-12 in. (22-30 cm)
Hardiness
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
Bloom Color
Dark Blue
Bloom Time
Late Spring/Early Summer
Other Details
Category
Biennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Patent Information
Propagation Methods
From seed; direct sow outdoors in fall
From seed; sow indoors before last frost
From seed; direct sow after last frost
Seed Collecting
Allow seedheads to dry on plants; remove and collect seeds
Regional

This plant is said to grow outdoors in the following regions:

Grass Valley, California

Oakhurst, California

San Leandro, California

Templeton, California

North Tonawanda, New York

Swansboro, North Carolina

Vancouver, Washington

show all

Featured Videos

Gardener's Notes:

0
positive
0
neutral
0
negative
Sort By:
Sort By:
Featured
Strelitzia Species
(Strelitzia nicolai)
Pome Looper
(Chloroclystis testulata)
Downy Woodpecker
(Picoides pubescens)
Featured
Strelitzia Species
(Strelitzia nicolai)
Pome Looper
(Chloroclystis testulata)
Downy Woodpecker
(Picoides pubescens)