Sweating is only done with newly planted bare-root roses. It is not done each spring. Don't use plastic bags for sweating. Heat buildup can cause injury or even death of the rose plant. Potted Roses Potted roses are the easiest to plant because you have a plant that is already growing.
Potted roses offer the flexibility of being ready for planting throughout the growing season.
With containers, simply tip the pot on its side and tap the root ball out. If the root ball doesn't come out easily, use a pair of tin snips, shears, or knife to cut the container off. Set the root ball into the prepared hole so the bud union is at the recommended depth. Refill the hole with soil and water as with bare-root roses. In the case of potted roses, you will not have to cover the canes with soil or sweat the canes as this process has been done for you by the nurseryman.