Hundreds of tiny purple, lavender, white or yellow tubular flowers in flat clusters bloom at the top of a tall, leafy stem. Trachelium is derived from the Greek meaning 'rough throat' with reference to its medical use to treat neck and throat disorders. Trachelium is a very thirsty flower that will wilt quickly if left out of water. Trachelium caeruleum or blue throatwort is a member of the Campanula family. The flower is native to the West and Central Mediterranean region (especially Portugal). This explains why Trachelium needs an average of 18 hours of light each day to flower. During short day periods growers solve this problem by artificially extending daylight.