CAMPANULA TRACHELIUM ALBA
Large flared ivory-white bells open along many strong stems which carry rough, nettle-like (but non-stinging!) leaves.The pure white version of this ancient cottage garden favourite comes quite true from seed as long as it is grown alone. This clump-forming, non-running plant will only spread by seed.
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.