Underpruning is the most common cause of an unproductive rose.
Old garden roses do not need extensive pruning in fall. Hard-pruning can ruin their shapes and reduce their flowering. Advertisement. Remove an old garden rose bush's old, unproductive stems, and reduce the bush's overall height by one-third.
Make each pruning cut 1/4 inch above the next bud on a stem. Jun 24, Otherwise, make any cuts on healthy branches late enough in the fall season to avoid causing the plant to send out tender shoots that can’t survive in winter.
After the first frost is typically a.