Troubleshooting
Phlox drummondii 'Intensia Cabernet' problems — and how to fix them
Phlox drummondii 'Intensia Cabernet' (Phlox drummondii 'Intensia Cabernet') 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.
Powdery mildew
Less common in this mildew-tolerant series, but possible in crowded, damp, shaded sites. Improve airflow and water at the base.
Reduced flowering
From insufficient sun or excess nitrogen. Site in full sun and use a balanced feed for non-stop bloom.
Root rot
Caused by waterlogged soil or overwatering. Plant in free-draining medium and let the surface dry between waterings.
Spider mites
Fine stippling and webbing in hot, dry conditions. Rinse foliage and treat with insecticidal soap or miticide if persistent.
Prevent phlox drummondii 'intensia cabernet' problems before they start
Most phlox drummondii 'intensia cabernet' issues are care-mismatch, not bad luck. Dial in the basics:
- Common annual phlox problems — the species this cultivar belongs to
- What's wrong with my plant? — the diagnosis apps compared
- Phlox drummondii 'Intensia Cabernet' watering schedule
- Phlox drummondii 'Intensia Cabernet' light requirements
- Best soil mix for phlox drummondii 'intensia cabernet'
- Phlox drummondii 'Intensia Cabernet' temperature & humidity
- Full phlox drummondii 'intensia cabernet' care guide
Looking for phlox drummondii 'intensia cabernet' in general rather than its problems? Read the full phlox drummondii 'intensia cabernet' care guide — light, water, soil and feeding.
Phlox drummondii 'Intensia Cabernet' problems — FAQ
Why is my phlox drummondii 'intensia cabernet' powdery mildew?
Less common in this mildew-tolerant series, but possible in crowded, damp, shaded sites. Improve airflow and water at the base.
Why is my phlox drummondii 'intensia cabernet' reduced flowering?
From insufficient sun or excess nitrogen. Site in full sun and use a balanced feed for non-stop bloom.
Why is my phlox drummondii 'intensia cabernet' root rot?
Caused by waterlogged soil or overwatering. Plant in free-draining medium and let the surface dry between waterings.
Why is my phlox drummondii 'intensia cabernet' spider mites?
Fine stippling and webbing in hot, dry conditions. Rinse foliage and treat with insecticidal soap or miticide if persistent.