This section is from the book "Commercial Gardening Vol2", by John Weathers (the Editor). Also available from Amazon: Commercial Gardening, A Practical & Scientific Treatise For Market Gardeners.
The Aconites or Monkshoods are not popular plants with market growers, probably owing to their poisonous properties. Many species, however, are grown by nurserymen for hardy borders and rock gardens, in which they are very ornamental when boldly massed. They are easily raised from seeds or by division of the rootstocks, tuberous or otherwise, in autumn. The following kinds may be noted: A. Anthora, 1-2 ft., pale yellow; A. autumnale, 3 ft., bluish purple; A. Napellus, the common tuberous-rooted Monkshood, 3-4 ft., deep blue; A. Wilsoni, 6 ft., pale bluish-purple; A. japonicum, 2-3 ft., deep blue; A. Lycoctonum, yellow; A. Fischeri, blue.