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)
Sun Exposure: Sun to Partial Shade
Bloom Color: Blue-Violet
Bloom Time: Mid Summer Late Summer/Early Fall
Foliage: Herbaceous Smooth-Textured
Other details: Average Water Needs; Water regularly; do not overwater
Soil pH requirements: 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline) 7.9 to 8.5 (alkaline)
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.
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.
This plant has been said to grow in the following regions:
Bayview, California Martinez, California Merced, California San Francisco, California Federal Heights, Colorado Hoffman Estates, Illinois Mount Prospect, Illinois Maple Hill, Kansas Marlborough, Massachusetts Winchester, Massachusetts Minneapolis, Minnesota Albuquerque, New Mexico Chenoweth, Oregon Kalama, Washington