Winter takes its toll on Colorado roses. The canes die back, leaving dead growth to prune in the spring. When should I prune roses?
Untimely pruning can leave roses vulnerable to killing frosts. Wait until two weeks before the last average hard frost to prune. The last average frost date in Denver is May Missing: Delta CO. Jan 17, Wait until the first frost is over to prune. Pruning your rose bushes can promote new growth.
If you trim them before the first frost, it could create new buds that will be killed when the first frost comes along. This can damage the plant and make it produce less flowers in the spring%(4). In the summer, prune rose bushes to remove dead or diseased branches.
Make the cuts one inch below the diseased branch, so only healthy wood remains.
Summer is also the time to look for any branches in the center of the bush that are growing across each other. Prune away the weaker of the branches that cross each shrubdelimbing.buzzg: Delta CO. Apr 27, The best time for the first pruning of roses is generally somewhere between late April and Mother’s Day -- after the plant has broken dormancy and after the final spring shrubdelimbing.buzzted Reading Time: 5 mins. Have some questions about what we can do?
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