This section is from the book "The Gardener's Monthly And Horticulturist V21", by Thomas Meehan. See also: Four-Season Harvest: Organic Vegetables from Your Home Garden All Year Long.
Roses of a tender nature of course require sufficient protection during the Winter, and with many amateurs the practice is to pot them, placing the plants in a warm room and watering liberally, but this is a mistaken kindness for in this state of their growth roses are much better without heat at all. The best plan is to place the plants when potted in a cold frame or pit, plunging the pots in coal ashes, tan or any other convenient material; give a good watering when potted, and afterwards water only when necessary. Admit air freely whenever the weather is favorable, while at other times supplying all necessary protection in the way of covering, and by this means your roses may be successfully preserved until it is again time to place them in the open ground.