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.
This is not grown so largely for market now as in years gone by, although there are still a few of the older growers who continue to raise a stock year after year, either from freshly sown seeds or from pieces of the roots of old stock plants placed in 5-in. pots. Musk is easily grown in any good compost, and in a temperature of 60° to 70° F. in spring it soon makes fine bushy masses of softly woolly green leaves, and masses of highly musk-scented flowers. Hybrids between M. luteus and M. cupreus have been raised and are known under the name of maculosus, owing to the heavy spots or blotches of deep-purple brown on the yellow flowers. The variety called Harrisoni has long been popular as a market plant, and realizes from 3s. to 5s. per dozen pots in these days.