[Note: If you are looking for pruning rhodos, not roses, volunteers do not prune them But we DO dead head spent rhododendron blooms <- pics ]
To prune roses correctly, first get down and have a close look. Check for diseased pieces -- cracks, discolored areas etc. Healthy rose branches should be green, not brown or red. Rose branches with unhealthy areas should be pruned back to the green areas. In some cases, the entire branch should be cut out.
Update June 6, 2009
If you've seen the video, this rose bush is the same one, and the one in the photo above. Rob is not happy with a few of the 'iffy' branches that he had debated on pruning or leaving, but overall, it is looking pretty good!
Here's a short video of how to prune roses that was taken at Brueckner Rhododendron Gardens yesterday.
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Thanks to Rob for sharing his expertise. And his time! With hundreds of roses to prune and nurture in the new rose garden, many hands can make light work.
Today's unseasonably hot weather will have the forsythia, azaleas, rhodos and other early bloomers popping their blossoms.
If you'd like to volunteer, come by weekdays and ask for Para or Joe. They will let you know what needs doing, and where it needs to be done. Rest assured pruning roses won't be one of them :-)