Campanula, Serbian Bellflower, Trailing Bellflower 'Blue Waterfall'

Campanula poscharskyana

Family: Campanulaceae (kam-pan-yew-LAY-see-ee) (Info)
Genus: Campanula (kam-PAN-yoo-luh) (Info)
Species: poscharskyana (po-shar-skee-AH-nuh) (Info)
Cultivar: Blue Waterfall
Additional cultivar information:(PP13161; aka Camgood)
Hybridized by Bloom
Registered or introduced: 2001


Alpines and Rock Gardens



Water Requirements:

Drought-tolerant; suitable for xeriscaping

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)


12-15 in. (30-38 cm)

15-18 in. (38-45 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

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:

From seed; direct sow outdoors in fall

Direct sow as soon as the ground can be worked

Seed Collecting:

Bag seedheads to capture ripening seed

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

N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed


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

Clovis, California

Garden Grove, California

Martinez, California

Rancho Santa Fe, California

Denver, Colorado

Littleton, Colorado

Park Ridge, Illinois

Fishers, Indiana

Royal Oak, Michigan

Morristown, New Jersey

Brooklyn, New York

Southold, New York

Westbury, New York

Raleigh, North Carolina

Cleveland, Ohio

Bethlehem, Pennsylvania

Mount Pleasant, Pennsylvania

Knoxville, Tennessee

Charlottesville, Virginia

Lexington, Virginia

Richmond, Virginia

CHIMACUM, Washington

show all

Gardeners' Notes:


On Jun 1, 2016, Justintim64 from Lexington, KY wrote:

I have 2 of these plants under a redbud tree with salvia and creeping phlox in Kentucky. It looks like a slow spreader and definitely prefer sun. The patch that is in shade has not speead as wide but I am ok with that. It may be contained by the creeping phlox but I did notice that it sends out long plants that may set roots where it touches the ground. It's not spreading quite as fast as I would like.


On Jun 29, 2015, RSFGardener from Rancho Santa Fe, CA wrote:

This plant is surprisingly hardy in hot, dry inland San Diego County. It is doing all right with twice a week watering. It's good in sun but seems to prefer a bit of shade. We have it in pots and in the ground. It forms pretty mounds of foliage and delicate purple flowers. The snails seem to like it, and they'll demolish and entire Bellflower plant in an evening, unfortunately. The plants have sprung up where I didn't plant them; I don't mind that, but others might.


On May 28, 2012, Clint07 from Bethlehem, PA wrote:

Is this plant invasive for you? In its second year on a border in my Zone 6 garden it has doubled the area that it occupies. Duration of blooming good and long.