Campanula Species, Adria Bellflower, Dalmation Bellflower, Wall Bellflower

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

Ca...Read Morempanula ‘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.

Easily grown in average, medium wet, well-drained soils in full sun to part shade. Appreciates part afternoon shade in hot summer climate...Read Mores. 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.

A very satisfying clump-forming plant for small areas of ground cover. Also tough but not overly aggressive. This one needs more water th...Read Morean 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 blu...Read Moree, 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.