Troubleshooting
Common Boxwood 'Suffruticosa' problems — and how to fix them
Common Boxwood 'Suffruticosa' (Buxus sempervirens 'Suffruticosa') 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.
Box blight
Fungal disease (Calonectria) causing dark leaf spots, bare patches and black streaks on stems. Improve airflow, avoid overhead watering, and remove and bin affected material.
Box tree caterpillar / box moth
Larvae web and strip foliage rapidly. Inspect regularly, pick off caterpillars, and use pheromone traps or Bacillus thuringiensis sprays as needed.
Winter bronzing
Foliage turns orange-bronze from cold, wind, and winter sun. Largely cosmetic; site out of harsh exposure and water before freezing weather to reduce it.
Root rot
Phytophthora in wet, poorly drained soil causes wilting and dieback. Plant high in free-draining soil and never let the root zone stay waterlogged.
Prevent common boxwood 'suffruticosa' problems before they start
Most common boxwood 'suffruticosa' issues are care-mismatch, not bad luck. Dial in the basics:
- Common common box problems — the species this cultivar belongs to
- What's wrong with my plant? — the diagnosis apps compared
- Common Boxwood 'Suffruticosa' watering schedule
- Common Boxwood 'Suffruticosa' light requirements
- Best soil mix for common boxwood 'suffruticosa'
- Common Boxwood 'Suffruticosa' temperature & humidity
- Full common boxwood 'suffruticosa' care guide
Looking for common boxwood 'suffruticosa' in general rather than its problems? Read the full common boxwood 'suffruticosa' care guide — light, water, soil and feeding.
Common Boxwood 'Suffruticosa' problems — FAQ
Why is my common boxwood 'suffruticosa' box blight?
Fungal disease (Calonectria) causing dark leaf spots, bare patches and black streaks on stems. Improve airflow, avoid overhead watering, and remove and bin affected material.
Why is my common boxwood 'suffruticosa' box tree caterpillar / box moth?
Larvae web and strip foliage rapidly. Inspect regularly, pick off caterpillars, and use pheromone traps or Bacillus thuringiensis sprays as needed.
Why is my common boxwood 'suffruticosa' winter bronzing?
Foliage turns orange-bronze from cold, wind, and winter sun. Largely cosmetic; site out of harsh exposure and water before freezing weather to reduce it.
Why is my common boxwood 'suffruticosa' root rot?
Phytophthora in wet, poorly drained soil causes wilting and dieback. Plant high in free-draining soil and never let the root zone stay waterlogged.