Campanula poscharskyana 'E. H. Frost'

Campanulaceae

  campanula_poscharskyana_e_h_frost2.jpg
Campanula poscharskyana 'E. H. Frost'
 

Habitat: rockeries or raised beds

Flowering: summer

Height: 10 cm

Width: 30 cm

Soil: gritty, well drained

All these small campanulas have masses of bell-shaped flowers, in the blue / purple / white colour range, in mid or late summer. Most of the small species are plants for sunny, well-drained positions on rockeries or raised beds, and many can be grown in walls by scattering seed. Some have a distinct preference for limestone, and a few need to avoid winter wet. See also Adenophora and Edraianthus for some related species, and Codonopsis for some climbing relatives. Also Cyananthus for some fine, low plants with trailing stems.

Campanula poscharskyana 'E. H. Frost' makes a great mound of trailing stems, covered with pointed-petalled flowers, which are not quite pure white, but the palest possible blue.
CPE-9
9 cm pot £4.00

Campanula - small varieties - some other suggestions
campanula_hagelia.jpg Campanula cf. andrewsii is a lovely species from the south of Greece, where it grows on limestone cliffs or in the mortar in walls. It makes a rosette of grey-green leaves, and after two or three years this expands with longer stems, pressed flat against the rock surface. Then the multitude of light purple flowers start to open, and the display continues for several weeks. Monocarpic, but we scatter the seed on our boundary wall, where a few plants will grow.
campanula_barbata.jpg Campanula barbata is taller (20 cm) than most on this page, with upright stems of pale blue, hairy flowers. Perennial, but often short-lived.
invisible.gif Campanula bayerniana is an unusual species with lovely rose-purple flowers.
invisible.gif Campanula betulifolia has dark green, dentate 'birch' leaves clothing the stems, and large white or pale pink flowers.
invisible.gif Campanula cashmeriana var. alba is a white form of Campanula cashmeriana, which comes from cliffs in mountains in the region from Afghanistan to northern India (Uttar Pradesh). In cultivation it is best under glass, in an alpine house or cool greenhouse. It has short trailing stems with silvery hairy leaves, and many white flowers, facing downwards.
invisible.gif Campanula cymbalaria has semi-creeping stems with upwards-facing bell-shaped flowers, blue to violet-blue. Found in alpine rock fissures in Israel and the Lebanon. Usually short-lived in cultivation and best in the alpine house.
invisible.gif Campanula fenestrellata subsp. istriaca is a particularly dainty plant ideal for the rock garden. It has masses of small blue flowers on a mat of hairy serrated leaves. It originates in Croatia.
campanula_incurva2.jpg Campanula incurva is a short-lived or biennial species with rosettes of grey-green, hairy rosettes, from which arises the spike of large, pale blue bell flowers.
campanula_moesiaca2.jpg Campanula moesiaca is rather like a biennial Campanula glomerata, with erect flowering stems bearing clusters of narrow lilac blue bells. The foliage is deep green, in a good-looking rosette of serrated leaves.
invisible.gif Campanula portenschlagiana makes low, evergreen mats, densely packed with small, deep green leaves. It is usually covered in masses of deep violet-blue flowers, carried on short branching stems. It was once known as Campanula muralis, meaning growing on walls, and can look great if established in the cracks of a wall.
invisible.gif Campanula portenschlagiana Resholt's variety or Dalmatian bell-flower forms a spreading patch with vivid blue flowers
invisible.gif Campanula poscharskyana is very easy and its name is well known, but it isn't as widely grown as it deserves. It has trailing stems, so many that they build up into a green mound, with lots and lots of pale purple flowers.
invisible.gif Campanula 'Samantha' makes low mats, covered with quite large (5 cm across), upward facing, lavender blue flowers. It is good in rock gardens, but can also be used to edge borders or grown in pots and other containers.
invisible.gif Campanula saxifraga subsp. aucheri has large blue-violet flowers on a dense clump of leaves. Should be protected from winter wet.
campanula_topaliana_delphica_foliage.jpg Campanula topaliana subsp. delphica is a biennial species endemic to limestone rocks in the south of Greece, usually growing in crevices in vertical cliff faces. It has gorgeous silvery grey foliage, with a rosette of wrinkled, short-stemmed leaves, and then it covers itself with masses of soft powdery blue, bell-shaped (i.e. campanulate) flowers.
invisible.gif Campanula tridentata x bellidifolia is a hybrid between two rather similar species. It makes a compact cushion, with lots of blue bell-shaped flowes on short, wiry stems.
invisible.gif Campanula troegerae has leaves and stems densely covered with fine hairs, so that it is silky or even downy on all surfaces. The flowers are pale pink in bud, white when open, so widely that they can be almost saucer-shaped. A rarity, from a small area in Turkey.