Symptoms
- check_circleBrown, dead tips on canes that spread downwards over time
- check_circleDark discolouration or lesions at the base of dying sections
- check_circleShrivelled, papery bark on affected canes
- check_circleHealthy growth lower on the same plant
Causes
- arrow_rightFungal pathogens entering through pruning wounds or cracks
- arrow_rightFrost damage killing exposed cane tips
- arrow_rightPhysical damage creating entry points for disease
- arrow_rightPoor drainage causing stress and disease susceptibility
- arrow_rightBotrytis (grey mould) infection
How to Diagnose
Cut into the dying cane — if the internal tissue is brown or discoloured it confirms die-back. If it is white or green, the cause may be surface only.
Treatment
Prune affected canes back to healthy, white-pith tissue, cutting to just above a bud. Sterilise pruning tools between cuts with rubbing alcohol. Dispose of infected material — do not compost it. Apply a wound sealant on large cuts.
Prevention
Always prune to just above a bud to minimise exposed tissue. Sterilise tools before pruning. Avoid pruning just before frost. Ensure good drainage and air circulation.
starsPremium Diagnosis
Upload a photo for AI-powered diagnosis and a personalised treatment plan.
Try Premium Free