Greenhouse Product News reports that there are in excess of 300 species of plants, which fall under the umbrella term "campanula." You can grow these plants in pots or integrate them directly into your landscape design. Hobbyists appreciate the fact that campanulas are easy to add into various flower bed designs, either by spreading the seeds during early spring or transplanting seedlings. In some cases campanulas serve in the dual function of attracting desirable wildlife as well as gracing the yard with their color and size varieties.
Colloquially known as the bellflower, campanulas include species that could be annuals or perennials. In spite of these differences, the plants' flowers feature a distinctive bell shape. An example of an annual campanula plant is C. macrostyla, while perennials include C. lactiflora and also C. alpina.
Bellflowers vary in size. C. lactiflora, which is colloquially known as the milky bellflower, reaches a height of about 30 to 36 inches. This makes it useful for planting next to other tall flora, such as trees. C. persicifolia---also known as the Telham Beauty---could grow as tall as 3 feet, which makes it a great choice as focal point of a flower bed. Keep in mind that you might have to support the taller plants by gently tying them to a stake. A smaller bellflower is C. rotundifolia---the harebell--which only grows to be about 4 to 15 inches tall.
Endangered Species Warning
C. rotundifolia blooms from about June to September. It thrives in sunny, partially shady and even shady areas of the yard. While it prefers sandy soil, it also grows in moist conditions, as long as there is sufficient drainage. The state of Ohio lists the harebell as an endangered plant, while New York reports it to be vulnerable.
Benefits of Campanula in the Landscape
C. carpatica has the reputation of attracting hummingbirds while at the same time not holding much interest for rabbits or deer. The plant grows to an average height of 7 inches. Showcase the purplish blue flowers against salvia and coreopsis. Hobbyists, who remove dead blooms consistently from their bellflowers, manage to keep the plants flowering over and over again during their main blooming times.
International Campanula Display
Visitors to the U.K. can find a campanula display at Burton Agnes Hall in Yorkshire. It is part of the collection that the National Council for the Conservation of Plants and Gardens oversees. Guests can purchase seeds to take home and later on plant for their own Yorkshire campanulas.