This section is from "The Horticulturist, And Journal Of Rural Art And Rural Taste", by P. Barry, A. J. Downing, J. Jay Smith, Peter B. Mead, F. W. Woodward, Henry T. Williams. Also available from Amazon: Horticulturist and Journal of Rural Art and Rural Taste.
It may be of use to your readers, to detail the method which I pursue in the treatment of Sweet-Scented Violets, especially as I have not seen a paper on the subject from any of your contributors. I consider the Neapolitan Violet to be the best sort in cultivation, but it unfortunately requires protection in winter. To treat them with advantage, about the end of April take the old roots and part them, plant them out in beds on a north or northeast border, there to remain till the end of September; then take them up, and pot them in thirty-two-sized pots, in a mixture of vegetable mould, road-scrapings, and loam; if not sufficiently gritty, add a little coarse river sand. Place a tile in the bottom of each pot, like-wise a handful of potsherds, broken very small. Water them, and plunge them in a frame in cinder ashes, elevating them to within a few inches of the glass; draw off the lights in fine, dry weather, and protect them from rain and damp; they will flower profusely the whole of the winter. They will also bloom in a greenhouse, provided they are placed in a dry, airy situation.
This kind has a doable flower, light blue, and is sweet-scented. The New Russian Violet is, without exception, the best hardy sort we have, as it blooms profusely the whole of the winter in the open ground, in any situation, which makes it very desirable to cultivate. Bedding them out every two years, about the end of April, in a dry soil, is quite sufficient; they require less room than many other kinds, as they make but few runners: a large, single, purple flower, very fragrant. The Banksian Violet has a sweet perfume, flowers single, purple, but not so profuse in blooming as the former. It requires to be planted on a warm border under a south wall, in March or April, and attended with water in dry weather; it will flower early in autumn. Several other varieties might be enumerated, but they are less worthy of notice. - Cottage Gardener.
 
Continue to: