This section is from the book "The Gardener V1", by William Thomson. Also available from Amazon: The New Organic Grower: A Master's Manual of Tools and Techniques for the Home and Market Gardener.
Few persons are aware of the beauty of this charming plant, although it is a native of this country. It is scarcely ever seen excepting in its mountain home. In its habits of growth it forms dense tufts of deep-green foliage, which are smothered in early spring with brilliant blue flowers, generally with a yellow or white throat. It grows very freely on rockwork if kept moist, or on borders with plenty of drainage.
For these descriptions I am greatly indebted to Mr T. S. Ware's excellent list of Perennials, a most useful work of reference. By-and-by I hope to give a few more notes on some of the rarer of these fine and useful plants. Nemo.