When to Transplant Roses
Roses should be transplanted in late fall or winter and can be effectively transplanted even in early spring. It is best to transplant your roses in winter, they will be dormant and transplant shock will be minimal.
Before you transplant your rose you should prune it fully so that it is easy to deal with and move to its new location in your garden. The day before you plan to transplant your rose you should water it very deeply to loosen the soil and give it one more light watering a few hours before you begin digging.
Depending on the size, and maturity of your rose you should dig between 8 and 12 inches away from the main trunk of the rose. If you run into very thick roots don’t just hack at them with your shovel – it is best to keep a pair of pruners or even branch loppers handy to cleanly cut these roots minimizing trauma. You want to be sure to dig at least a foot and a half down before you attempt to get your rose out of the hole.
Now that you have your rose bush safely extracted you will want to dig a hole that is slightly bigger than the root ball of your bush. Depending on how fertile the soil is where you are transplanting you might want to make a much larger hole so that you can add a lot of fresh organic material. In other case it is important to add at least some organic material to the hole you are transplanting your rose bush to as this will help it to bloom in the coming season.
After you fill in the hole you should again water deeply, and keep watering your rose bush regularly as the soil dries out. Your rose bush has lost a significant amount of its roots and will take a while during the growing season to recover so it is important it has easy access to water as well as food.
Finally it’s a good idea to keep your roses mulched and this is especially true after a fresh transplant. Mulch will help the soil retain moisture, increase the soil temperature allowing more root growth and even help keep weeds down in the new disturbed soil.