Question
I planted a rose bush about 2 years ago, and it is doing well.  We are going to be building an addition on our home, beginning in the next couple of weeks, and the bush will have to come out.  I would like to replant it by the new addition, which will be about a month.
Can I take it out, put it into a large pot, and plant it at the end of June?  

Answer
The best time to transplant a rose is when it isn't growing such as the fall or very early spring. However if you have to move the rose bush,   then you have no alternative. I say this because roses just hate to be disturbed when they are growing. Have the pot ready and then cut the rose down to 18 inches as you will be damaging the feeder roots and the roots can't sustain a large bush. This will set the flowering back but when you re-plant it again that will also set back and even stop the bush from blooming. Dig out as much of the rose roots as you can, starting by digging a circle with a shovel all around the base. Roses have two types of roots, the deep ones are mainly anchor ones and the ones near the top are feeder roots. Get as much out of these as you can. Never mind if the anchor roots break off. Place the pot where it doesn't get the hot afternoon sunshine. Then water water water daily to keep the plant moist. Just ignore the rose if it wilts, keep watering but no fertilizer as the roots can't take it up. I should warn you that if the rose has started to leaf out it may get even with you for moving it by dying. When you replant it, try to give it shade from the hot sun. Mulch all around the base and if it continues to wilt then prune it way back to 12 inches to try an save it.