Pest identification
What's eating my himalayan cypress?
Cypress canker (Seiridium cardinale fungus)
Signs: Resin-soaked cankers on branches; individual branches die back with brown foliage; spreads rapidly on stressed or drought-weakened trees.
Control: Prune infected branches below the canker margin using sterilised tools; destroy all prunings; improve irrigation; no effective chemical cure post-infection.
Cypress bark beetles (Phloeosinus spp.)
Signs: Boring into bark of stressed trees; frass at entry holes; larval galleries girdle branches causing dieback.
Control: Keep trees healthy and well-watered; remove and destroy dead wood quickly; preventive pyrethroid trunk spray on high-value trees in beetle season.
Spider mites (Tetranychus spp.)
Signs: Stippling and bronzing of foliage in hot, dry summer weather; fine webbing; premature needle drop.
Control: Apply miticide (abamectin) in summer; improve irrigation to reduce heat stress; spray with water to disrupt mite colonies.
Keep himalayan cypress pest-free
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Himalayan Cypress pests — FAQ
What is eating my himalayan cypress?
Himalayan Cypress is generally resistant to pests but is susceptible to cypress canker (Seiridium cardinale) especially when drought-stressed. Cypress bark beetles (Phloeosinus spp.) can attack weakened trees. Spider mites may cause foliage discolouration in hot summers. Healthy, well-watered trees resist most problems.
How do I get rid of cypress canker (seiridium cardinale fungus) on himalayan cypress?
Resin-soaked cankers on branches; individual branches die back with brown foliage; spreads rapidly on stressed or drought-weakened trees. Prune infected branches below the canker margin using sterilised tools; destroy all prunings; improve irrigation; no effective chemical cure post-infection.
How do I get rid of cypress bark beetles (phloeosinus spp.) on himalayan cypress?
Boring into bark of stressed trees; frass at entry holes; larval galleries girdle branches causing dieback. Keep trees healthy and well-watered; remove and destroy dead wood quickly; preventive pyrethroid trunk spray on high-value trees in beetle season.
How do I get rid of spider mites (tetranychus spp.) on himalayan cypress?
Stippling and bronzing of foliage in hot, dry summer weather; fine webbing; premature needle drop. Apply miticide (abamectin) in summer; improve irrigation to reduce heat stress; spray with water to disrupt mite colonies.