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Throatwort, Nettle leaved Bellflower, Coventry Bells, Our Lady's Thimbles 'Bernice'

Campanula trachelium

Family: Campanulaceae (kam-pan-yew-LAY-see-ee) (Info)
Genus: Campanula (kam-PAN-yoo-luh) (Info)
Species: trachelium (trak-ELL-ee-um) (Info)
Cultivar: Bernice
View this plant in a garden



Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us


12-18 in. (30-45 cm)

18-24 in. (45-60 cm)


12-15 in. (30-38 cm)

15-18 in. (38-45 cm)


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)

Sun Exposure:

Sun to Partial Shade



Bloom Color:


Bloom Time:

Mid Summer

Late Summer/Early Fall



Other details:

Unknown - Tell us

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

7.9 to 8.5 (alkaline)

Patent Information:

Unknown - Tell us

Propagation Methods:

By dividing the rootball

From seed; direct sow outdoors in fall

From seed; winter sow in vented containers, coldframe or unheated greenhouse

From seed; sow indoors before last frost

Seed Collecting:

Allow pods to dry on plant; break open to collect seeds


This plant has been said to grow in the following regions:

Grayslake, Illinois

Roslindale, Massachusetts

Hopkins, Minnesota

Denville, New Jersey

Gardeners' Notes:


On Dec 12, 2014, coriaceous from ROSLINDALE, MA wrote:

The sterile double flowers are very beautiful.

I've grown this in partial shade. The flower stems needed support. This also began needing deadheading soon after flowering began, and I'm not willing to deadhead. Bloom season was fairly short.

This plant seemed less drought tolerant than most.


On Jul 5, 2011, ms_greenjeans from Hopkins, MN (Zone 4a) wrote:

This is an excellent bellflower. It has nicer foliage than campanula glomerata and is sturdier than the peach-leaved bellflower. It has a nice medium height and the lovely purple/periwinkle flowers. It blooms for quite a long time if deadheaded but otherwise requires very little care or maintenance.


On Mar 19, 2007, berrygirl from Braselton, GA (Zone 7b) wrote:

Med ht. 20-36"- plant 14" apart. zone 3/4-8. A frilly double flowering Bellflower with sturdy stems and crinkled foliage. Blooming abundantly in early summer, then long into fall if deadheaded.