How to Prune Tree Roses
- 1). Prune tree roses most aggressively during late winter/early spring, when the tree rose is dormant--the leaves have all dropped off, and there are no signs of growth. Remove all dead or diseased wood.
- 2). Remove any canes that are crossing and on top of each other, and prune out spindly twigs and branches out of the center of the bush to ensure light and air can circulate. This also helps reduce the risk of disease.
- 3). Prune back “leggy” canes--those extending beyond the tree rose’s shape-back to a bud or bud eye. Keep the overall shape as symmetrical as possible so that the foliage will fill in evenly during growth and blooming. Clean up all debris and dispose of properly to avoid pests and disease wintering on the trimmings.
- 4). Watch out for and remove and suckers that appear from the trunk or around the root, which can happen throughout the season. Cut them away as close as possible to their base.
- 5). Prune gently during blooming and growing season, trimming back canes that get too leggy, to maintain the rose’s symmetry.
- 6). Prune for blossoms. If you want to stimulate blooms, cut the rose branch at a 5-leaflet cluster. Prune about a ¼ inch above where the leaf stem meets the branch--the new bud is tucked in there. The resulting branch will be shorter and bloom sooner.
- 7). Keep an eye out for die back (branches turn yellow or black, then die) or diseased wood. This can happen throughout the season, and should be promptly removed.