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.
Although Celery is very hardy in a natural or poorly grown state, it is soon injured by frost when gorged with luxuriance, or blanched; therefore, as we have it in cultivation, winter protection is necessary. It is also soon rotted or rendered insipid if kept too warm, on which account a temperature that is only a few degrees above the freezing point is best Avoid close, damp cellars; for in such places it is almost sure to decay. Often as this plan has been tried, there have been few cases of success. The best method which has come under my own observation is as follows: - Choose a piece of ground where the water can pass off freely, and bed the heads in rows of about six in each, and in an upright position. Commence by raising a bank against which the first row shall rest; lift each head, and preserve the roots carefully, which may be done by cutting down one side of the row in which it has grown, and afterwards putting the spade under each plant Before lifting, tie a piece of bast or twine around the upper part, which will prevent the stalks from breaking, and also facilitate the process. Remove all decayed leaves, and fix carefully against the bank almost close together; raise up in front enough soil to cover nearly to the top, leaving only a portion of the top leaves exposed.
The next row may be a few-inches asunder, and so on. Afterwards leave all uncovered until wet or frost sets in, when a coping of boards or shutters should be fixed over. Where there is not this convenience, a quantity of pea-stakes may be laid over the top: but whatever be used a coating of litter, pea haulm, or other like material, will be required to keep out the frost. It may also be left to winter in the ridges; but in this way a great quantity of covering is necessary, and which afterwards requires much labor to remove. The first is most economical, and is equally safe.