About Trachelium caeruleum L.
Trachelium caeruleum, commonly called blue throatwort, is a species of flowering plant belonging to the Campanulaceae family. It is native to the Mediterranean region, where its native range covers Algeria, Morocco, Portugal, Spain, and Sicily. It has also naturalized in a small number of other areas, including New Zealand, the Azores, and parts of mainland Europe.
This plant is a woody-based, erect herbaceous perennial. It grows to 120 cm (47 in) tall and 30 cm (12 in) wide, bears oval leaves, and produces dense clusters of violet-purple flowers during summer. Its specific epithet caeruleum translates to "dark blue".
In temperate climates, this plant is most often grown as a half-hardy annual, used for summer bedding displays or in planters. It has been awarded the Royal Horticultural Society's Award of Garden Merit. Many cultivars exist, offering a range of flower colors that include white, red, pink, and dark purple.
