What are critical mistakes to avoid when pruning roses?
Written by
Nguyen Minh
Reviewed by
Prof. Samuel Fitzgerald, Ph.D.Steering clear of the typical pruning mistakes will ensure your roses remain healthy and continue to bloom! Common issues include pruning with dull tools and pruning at the wrong time, which can cause irreversible damage. I have witnessed bushes suffer for years from simple mistakes that could have been avoided. If you understand these issues, you will be able to prune with confidence and improvement.
Dull Tool Damage
- Blunt blades crush stems instead of cutting cleanly
- Torn tissue invites diseases like cane borers
- Always sharpen pruners before each use
- Test blades on paper - they should slice not tear
Fall Pruning Dangers
- Late season cuts push tender new growth
- This growth dies in first frost
- Weakened plants struggle next spring
- Only remove deadwood after first frost
Sealant Problems
- Pruning paints trap moisture against cuts
- Fungal diseases thrive in these damp areas
- Healthy roses heal naturally without sealants
- Focus on clean cuts not artificial protection
Sterilizing your tools stops the spread of disease between plants. I have alcohol wipes with me in my pocket for all your trimming sessions. Wipe your blades after every cut when working with sick plants. Cleaning your tools protects your whole garden! This habit saved the rose I received from the black spot.
The angle at which you cut the plant material is crucial. Flat cuts are prone to holding water, which can cause them to rot and decay. An angled cut allows resiliency and drains moisture away from the buds. Use shears at a 45-degree angle to the outward-facing side. I always practice on discarded stems before I cut living canes. Practice makes precision, which will prevent problems.
Do not be tempted to over-prune. Removing too much of the plant can be stressful for it. The plant needs leaves to recover from photosynthesis. Don't exceed removing more than 1/3 of the bush per year. My neighbor lost his prize rose bushes because he pruned them back too far. Being patient with your plant will give you a better outcome.
Read the full article: Ultimate Rose Bush Pruning Guide
