"Violet Veil". Dense, cloudy sprays of thousands of small, fragrant, intensely violet flowers appear in early summer. Although a half hardy perennial from the Mediterranean it may easily be grown as an annual.
For best results, sow immediately onto a good soil-based compost. Cover the seeds with fine grit or compost to approximately their own depth. They can be sown at any time, and germination can sometimes be quicker if kept at 15 to 20 degrees C. We sow most seeds in an unheated greenhouse and wait for natural germination, as many seeds have built-in dormancy mechanisms, often waiting for natural spring germination, hence giving them a full season of growth.
Common name:Purple Umbrella Trachelium; Blue Throatwort
Classification:Half hardy perennial