Trachelium caeruleum, common name blue throatwort, is a species of flowering plant in the family Campanulaceae native to the Mediterranean, where its native range includes Algeria, Morocco, Portugal, Spain, and Sicily.

[2] It has also become naturalized in a few areas, including New Zealand, the Azores, and parts of mainland Europe.

[4] In temperate climates this plant is usually grown as a half-hardy annual for summer bedding schemes or planters.

It has gained the Royal Horticultural Society's Award of Garden Merit.

[5][6] There are many cultivars with a variety of flower colors, including white, red, pink, and dark purple.