Particularly suited to the border, although the dwarf varieties are excellent when grown in the rock garden. They will flourish in any ordinary good soil and they grow very freely.
Sow seeds in a cold frame in autumn or spring. Divide the roots of old plants, also in autumn or spring. A few varieties are best increased by cutting3 taken in spring. Some of the most useful species and varieties for the amateurs garden are:
C. carpatica. Violot flowers. Suitable for rock garden. Height 9-in.
C. excisa. Lilac bells, June. 4-in.
C. jenestrellata. Light blue flowers, July. Suitable, for rock garden. 0. garganica alba. White star-shaped flowers in July.
C. G. F. Wilson. Grey foliage and violet flowers, in July. Height 3-in. A charming hybrid for the rock garden.
C. persicifolia, the Peach-leaved cam-panula of which there are numerous hybrids. Telham Beauty is one which should be in every garden.
The popular Canterbury Bells are biennials of this genus (C. medium).
C. pusilla. Lavender-blue dwarf harebell, flowers in June. Height 3-in.
C. Raddeana. Glossy foliage, purple bells, July to August. Height 9-in.
C. speciosa. Lavender-blue bells. Height 18-24 in.
C. Stansfieldii. Lilac Bells. August. Height 3-4 in.