Troubleshooting
Souvenir de la Malmaison Rose problems — and how to fix them
Souvenir de la Malmaison Rose (Rosa 'Souvenir de la Malmaison') is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Balling in rain
The densely petalled blooms trap rain, fail to open and rot brown; site in a warm, dry, sheltered spot and remove spoiled flowers promptly.
Mildew and black spot
More susceptible in cool, wet climates; ensure airflow, water at the base and clear fallen leaves to reduce infection.
Dislikes hard pruning
Responds poorly to severe cutting back; prune lightly, removing only dead, weak or crossing wood to keep it flowering well.
Limited winter hardiness
Tender in colder zones; mulch the base heavily and choose a sheltered position in regions below zone 6.
Prevent souvenir de la malmaison rose problems before they start
Most souvenir de la malmaison rose issues are care-mismatch, not bad luck. Dial in the basics:
- Common rose problems — the species this cultivar belongs to
- What's wrong with my plant? — the diagnosis apps compared
- Souvenir de la Malmaison Rose watering schedule
- Souvenir de la Malmaison Rose light requirements
- Best soil mix for souvenir de la malmaison rose
- Souvenir de la Malmaison Rose temperature & humidity
- Full souvenir de la malmaison rose care guide
Looking for souvenir de la malmaison rose in general rather than its problems? Read the full souvenir de la malmaison rose care guide — light, water, soil and feeding.
Souvenir de la Malmaison Rose problems — FAQ
Why is my souvenir de la malmaison rose balling in rain?
The densely petalled blooms trap rain, fail to open and rot brown; site in a warm, dry, sheltered spot and remove spoiled flowers promptly.
Why is my souvenir de la malmaison rose mildew and black spot?
More susceptible in cool, wet climates; ensure airflow, water at the base and clear fallen leaves to reduce infection.
Why is my souvenir de la malmaison rose dislikes hard pruning?
Responds poorly to severe cutting back; prune lightly, removing only dead, weak or crossing wood to keep it flowering well.
Why is my souvenir de la malmaison rose limited winter hardiness?
Tender in colder zones; mulch the base heavily and choose a sheltered position in regions below zone 6.