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.
Oar neighbor Mr. Wm. Saunders offers the following valuable hint on winter Parsley. This useful herb is much in demand in the culinary department, especially is it so during winter when everything green is at a premium. A good supply may be had by planting a glassed frame and protecting it from severe frosts. Those who have the convenience of a greenhouse, or grapery will find the following a desirable method of cultivating a sufficient quantity of roots.
Procure an old flour barrel and pierce the sides of it with holes 1 inch in diameter and about 9 inches apart* Three or more holes should also be made in the bottom for the escape of water. Prepare a quantity of light loamy soil, mixed with a portion of well rotted manure or decayed leaves, and commence filling the barrel by placing three inches of oyster shells, or any other convenient material for drainage; over this place a turf to prevent the earthy particles from mixing with it Then fill in enough soil to bring a level with the first circle of holes, draw the roots of the plants through from the outside, all but the tops. Proceed in a similar manner until the barrel is filled, then plant the top, when finely grown it is an ornamental object, as well as a useful one. Although an old system, I had never seen it practised, and my first attempt was almost a failure. I found a difficulty in keeping the soil properly moistened, on account of the numerous holes on the sides through which the water escaped without penetrating to the centre. This I remedied by building a perpendicular drain in the centre of the barrel.
Having provided a quantity of small pieces of brick, and charcoal I placed a cylindrical tin tube (an old quart measure minus the handle and bottom) in the centre on top of the drainage, and filled it with these materials, drawing it up and filling again as the planting proceeded. This had the desired effect and allowed an equal distribution of moisture through the soil.
Young plants raised from seed the preceding spring are beat; secure all the roots and trim in the leaves close when planted. The stronger and more luxuriant the plants are before winter the better will be the supply. The month of September will be early enough to plant, and the barrel should be kept fully exposed and regularly watered until taken into the house before frost.

 
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