When and how much do you cutback a climbing rose tree?

Before the first freeze or after the last in the spring, cut the vines and branches back by 1/3 To 2/3. 2/3 will mean new grown is closer to the ground. 1/3 means new growth will be higher up and will need more water. Best wishes 😇

It's usually best to prune in winter, after the flowers have faded, between December and February. First remove dead, diseased or dying branches. Then tie in any new shoots needed to fill supports. Prune any flowered side shoots back by two thirds of their length. If the plant is heavily congested, cut out any really old branches from the base to promote new growth. Best of luck!

I cut mine back by 2/3 each fall. They spring to life once again in the spring and shoot off new growth.