early pruning for roses
In the Willamette Valley the best time to prune is mid-February to early March. This timing is suggested because generally we will have weather that encourages the plant to start growing, and the risk of frost has diminished. Pruning earlier (before the last frost or foretasted cold weather) may cause the rose grower problems. If you prune early, you may experience dieback and have to re-prune again after better weather arrives.
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