Gummosis in Cherry Tree
Cherry trees produce spectacular spring blossom followed by delicious fruits in summer. A condition where a plant oozes a sticky amber or brown gummy substance from its bark or stems, indicating fungal infection, pest damage, or physical stress.
Cherry Tree care requirements
These care conditions are most relevant to gummosis in Cherry Tree. Check each one as a potential cause.
Symptoms to look for in Cherry Tree
- fiber_manual_recordAmber, brown, or clear gummy ooze from bark or stems
- fiber_manual_recordSunken, discoloured patches (cankers) beneath the gumming
- fiber_manual_recordGum exuding from pruning wounds or cracks
- fiber_manual_recordDieback above the gumming point in severe cases
Common causes in Cherry Tree
- fiber_manual_recordFungal pathogens such as Phytophthora or Cytospora entering through wounds
- fiber_manual_recordBacterial canker infections
- fiber_manual_recordBorer pests tunnelling under bark
- fiber_manual_recordPhysical damage from pruning, frost, or sunscald
- fiber_manual_recordWaterlogged soil causing root and crown rot
How to diagnose gummosis in Cherry Tree
Scrape back the bark near the gum — brown or orange staining beneath confirms fungal involvement. Check for borer frass (sawdust-like material) if gum is around holes.
How to treat gummosis in Cherry Tree
Cut out cankered tissue to clean wood and sterilise tools. Apply a copper-based fungicide. Improve drainage around the base. Treat for borers if present. Avoid injuring bark during cultivation.
Preventing gummosis in Cherry Tree
Avoid wounding bark unnecessarily. Apply tree wound paint to large pruning cuts. Maintain good drainage. Plant in well-draining soil and avoid overwatering.