Troubleshooting
Kashmir Cypress problems — and how to fix them
Kashmir Cypress (Cupressus cashmeriana) 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.
Frost damage
Kashmir Cypress is frost-tender (to around 2°C) and will be killed or severely damaged by frost. In the UK and cool-temperate climates, protect with horticultural fleece in winter or grow in a large container that can be moved under glass. Site against a south-facing wall in mild coastal areas.
Seiridium canker
Fungal canker (Seiridium cardinale) causes branch dieback, bark cracking, and resin bleeding. Stressed trees are most vulnerable. Prune affected branches to healthy wood, sterilising tools between cuts; improve site drainage and air circulation.
Scale insects and red spider mite
Glasshouse-grown specimens are prone to scale insect and red spider mite infestations, particularly in low humidity. Increase humidity by regular misting, and treat with insecticidal soap or neem oil. Inspect undersides of branchlets regularly.
Prevent kashmir cypress problems before they start
Most kashmir cypress issues are care-mismatch, not bad luck. Dial in the basics:
Kashmir Cypress problems — FAQ
Why is my kashmir cypress frost damage?
Kashmir Cypress is frost-tender (to around 2°C) and will be killed or severely damaged by frost. In the UK and cool-temperate climates, protect with horticultural fleece in winter or grow in a large container that can be moved under glass. Site against a south-facing wall in mild coastal areas.
Why is my kashmir cypress seiridium canker?
Fungal canker (Seiridium cardinale) causes branch dieback, bark cracking, and resin bleeding. Stressed trees are most vulnerable. Prune affected branches to healthy wood, sterilising tools between cuts; improve site drainage and air circulation.
Why is my kashmir cypress scale insects and red spider mite?
Glasshouse-grown specimens are prone to scale insect and red spider mite infestations, particularly in low humidity. Increase humidity by regular misting, and treat with insecticidal soap or neem oil. Inspect undersides of branchlets regularly.