Question
I have two roses that are seven sisters.  I want to move them to a new location,but they are extremely large and would have to be pruned to about 1/2 their size. I need to know the correct time and way to prune them and when should I move them. I live in zone 7. I would appreciate any information on caring for them that you may have. Thank you in advance for all your help.

Answer
The best time to move a rose to make sure it will survive is in the late fall or early spring. Have the new holes ready, water the roses well the day before, then cut them down by a half, even more if you want. Dig out as much as you can of the top roots, don't be concerned if you can't get the long tap roots and snip any ragged ends off. Place a thick six inch mulch all around the base as roses love cool roots and also the new feeder roots won't dry out. Because transplanting will have damaged the old feeder roots, you will now have to water, water, water as they won't be strong enough to supply any nutrients for at least a couple of months even more. If the canes sag and the new leaves droop, just keep watering as the rose bush may not perk up for a few months. Don't give it any fertilizer until half way through the summer as you want new roots to grow not top growth that the frail roots can't support yet. It may also not make any new growth until next spring. Seven Sisters is a multiflora which means that it grows like a very large shrub pushing out many canes from the base. I would cut down to the base about three of the oldest canes as that will make way for more new ones. Also because it is a large plant a couple of stakes will stop any root rocking. Root rocking will kill the newly forming feeder roots which look like threads.
Seven Sisters is called that because of the seven different shades the roses fade out to. I am sure you already knew that.But planting in full sun makes the flowers fade quickly to off white so you tend not get the full effect. You will get all seven shades if you plant the rose where is doesn't get full afternoon sun. Hope this helps.