As fall begins, rose bushes usually close up and stop blooming.

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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.

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Make each pruning cut 1/4 inch above the next bud on a stem. “Pruning in fall will kill them” said Jacko, a rose expert who grows varieties at her home in Hinckley. Pruned roses lose food stored in the branches that will keep roots healthy over shrubpruning.barted Reading Time: 3 mins.