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The Campanula glomerata, also known as Clustered Bellflower or Dane's Blood, is a beautiful perennial herbaceous plant that grows to a height of 20-60 centimeters, with a maximum of 90 centimeters. This plant is native to the North Temperate Zone of Eurasia, from Europe to Japan, and it is widespread in Europe except for the extreme north. It is also naturalized in North America.

Campanula glomerata is recognized by its stunning blue-purple flowers that form a mass at the top of the stalks. It typically blooms in June and July, and sometimes again in late summer. This plant thrives in sunny areas and quickly grows in good soil. It is known to propagate by runners, making it an easily spreadable plant.

In its natural habitat, Campanula glomerata can be found in forests, dry grasslands, scrub, open woodland, edges of woods, and along the margins of roads and trails. It prefers calcareous soils and can grow at altitudes of up to 1,500 meters above sea level.

This plant is adored for its bell-shaped flowers and is widely cultivated in gardens. There are various cultivars available, offering a range of colors including white, pink, blue, and purple. Some popular cultivars include 'Joan Elliott' with large violet flowers and 'Schneekrone' with white flowers.

Campanula glomerata is a low-maintenance plant that is very easy to grow. Its seeds usually germinate in 2-4 weeks at a temperature of 18°C. It can be propagated by surface sowing the seeds in spring in a cold frame. It is best to divide the plants in spring or fall, and they may benefit from a hard clipping back immediately after blooming to maintain a low, compact mound.

The Clustered Bellflower is not only a beautiful addition to any garden, but it is also significant in Rutland, England, where it is the county flower. Its name "Campanula" refers to the bell-shaped flowers, while "glomerata" refers to the tight grouping of the flowers at the top of the stem.

Overall, Campanula glomerata is a delightful plant that adds color and charm to any garden. Its easy cultivation and stunning flowers make it a favorite among gardeners. With its rich history and widespread presence in gardens, this plant is one to consider for your outdoor space.