By late February, the new leaf buds are just starting to grow. When these small buds get at least 1/4 inch long that's the signal to begin pruning. Make pruning cuts on a slight angle and just above an outside bud. This will encourage the plant to open up and allow for good light and air movement. Bush roses can be cut back to 2 to 3 feet in height and climbers can be cut to 5 or 6 feet.
Be sure to read Richard’s weekly Garden Q & A in the Saturday Home Section of the Richmond Times-Dispatch.