Troubleshooting
Sanguisorba 'Tanna' problems — and how to fix them
Sanguisorba 'Tanna' (Sanguisorba 'Tanna') 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.
Drought stress
Foliage scorches and flowering shortens in dry soil; keep the root zone moist through summer.
Powdery mildew
White mildew develops on stressed, dry plants; maintain moisture and good airflow to prevent it.
Crown rot in wet winters
Crowns can rot in waterlogged winter soil; ensure free drainage, particularly on heavy ground.
Congested clumps
Vigour and flowering decline as clumps age; divide every few years to refresh them.
Prevent sanguisorba 'tanna' problems before they start
Most sanguisorba 'tanna' issues are care-mismatch, not bad luck. Dial in the basics:
Looking for sanguisorba 'tanna' in general rather than its problems? Read the full sanguisorba 'tanna' care guide — light, water, soil and feeding.
Sanguisorba 'Tanna' problems — FAQ
Why is my sanguisorba 'tanna' drought stress?
Foliage scorches and flowering shortens in dry soil; keep the root zone moist through summer.
Why is my sanguisorba 'tanna' powdery mildew?
White mildew develops on stressed, dry plants; maintain moisture and good airflow to prevent it.
Why is my sanguisorba 'tanna' crown rot in wet winters?
Crowns can rot in waterlogged winter soil; ensure free drainage, particularly on heavy ground.
Why is my sanguisorba 'tanna' congested clumps?
Vigour and flowering decline as clumps age; divide every few years to refresh them.