Campanula Species, Adria Bellflower, Dalmation Bellflower, Wall Bellflower

Campanula portenschlagiana

Family: Campanulaceae (kam-pan-yew-LAY-see-ee) (Info)
Genus: Campanula (kam-PAN-yoo-luh) (Info)
Species: portenschlagiana (port-en-shlag-ee-AH-nuh) (Info)
Synonym:Campanula muralis
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Alpines and Rock Gardens



Water Requirements:

Average Water Needs; Water regularly; do not overwater

Sun Exposure:

Full Sun

Sun to Partial Shade




Foliage Color:

Unknown - Tell us


under 6 in. (15 cm)


15-18 in. (38-45 cm)

18-24 in. (45-60 cm)


USDA Zone 3a: to -39.9 C (-40 F)

USDA Zone 3b: to -37.2 C (-35 F)

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)

Where to Grow:

Grow outdoors year-round in hardiness zone

Can be grown as an annual



Bloom Color:


Bloom Characteristics:

This plant is attractive to bees, butterflies and/or birds

Bloom Size:

Unknown - Tell us

Bloom Time:

Late Spring/Early Summer

Mid Summer

Late Summer/Early Fall

Other details:

Unknown - Tell us

Soil pH requirements:

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

7.9 to 8.5 (alkaline)

Patent Information:


Propagation Methods:

By dividing rhizomes, tubers, corms or bulbs (including offsets)

From seed; sow indoors before last frost

Seed Collecting:

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


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

Eureka, California

Martinez, California

Merced, California

San Francisco, California

Denver, Colorado

Hoffman Estates, Illinois

Mount Prospect, Illinois

Maple Hill, Kansas

Marlborough, Massachusetts

Winchester, Massachusetts

Royal Oak, Michigan

Minneapolis, Minnesota

Albuquerque, New Mexico

Brooklyn, New York

North Gower, Ontario

The Dalles, Oregon

Kalama, Washington

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Gardeners' Notes:


On Jul 15, 2011, SpikeyGuy from Oakland, CA (Zone 11) wrote:

My favorite is (I believe) a cultivar of the named one here...lovely for it's white eye -- here's what Monterey says...

Campanula Blue Gown flowers spreading to trailing evergreen or semideciduous perennial is similar to C. poscharskyana but more restrained and neater looking. Dense crowns of foliage break into sprays of bright blue flowers, each with a white eye. Leaves are often very hard, dark green, somewhat hairy, and with a conspicuously frilled margin. Tends to retreat to a relatively tight clump after spring bloom, then flush again in fall. Sun to mostly shade, presumed frost hardy.


On Nov 30, 2004, smiln32 from Oklahoma City, OK (Zone 7a) wrote:

Easily grown in average, medium wet, well-drained soils in full sun to part shade. Appreciates part afternoon shade in hot summer climates. Good soil drainage is essential. Can spread rapidly by rhizomes in optimum growing conditions (read: potentially invasive). Will naturalize well. Makes a great groundcover, forming low mounds of foliage growing 3-6" tall and 6-12" wide. Slugs and snails will sometimes feed on the foliage.


On Apr 7, 2003, redsam1942 from Newberg, OR wrote:

A very satisfying clump-forming plant for small areas of ground cover. Also tough but not overly aggressive. This one needs more water than campanula poscharskiana, and it is not as rapid-growing, but it moves nicely to fill small spaces with vivid green foliage and cerulean blossoms.


On Jan 18, 2003, Baa wrote:

A vigorous, carpet forming Campanula from Croatia.

Has toothed, mid-green, ovate, kidney or heart shaped leaves. Bears blue, funnel shaped starry flowers which appear to almost cover the plant.

Flowers mainly June-September

Loves a well drained, moist, neutral to alkaline soil in sun or light shade. It's often evergreen in England but may be deciduous in colder regions.

Can be a bit invasive but not overly so.