Pest identification
What's eating my hinoki cypress bonsai?
Spider mites
Signs: Fine webbing on foliage, yellowing or bronzing of needles, weakened growth — worst in hot, dry summers
Control: Mist foliage regularly to raise humidity; spray with neem oil or miticide; repeat every 5–7 days until clear
Scale insects
Signs: Waxy brown or white bumps on bark and branches; sap loss causes dieback and sooty mold on sticky honeydew
Control: Scrape off manually or dab with rubbing alcohol; treat with horticultural oil, repeating after 14 days
Wood-boring beetles
Signs: Entry holes in bark, sawdust frass, dieback of branches as larvae tunnel through the cambium layer
Control: Keep tree vigorous — borers target stressed plants; remove and destroy infested wood; no curative spray once larvae are inside
Keep hinoki cypress bonsai pest-free
Healthy plants resist pests best. Get the basics right:
Hinoki Cypress Bonsai pests — FAQ
What is eating my hinoki cypress bonsai?
Hinoki Cypress bonsai face their biggest threat from spider mites, which thrive in hot, dry conditions and cause foliage discoloration. Scale insects and wood-boring beetles also attack weakened trees. Overall pest resistance is good when the tree is healthy, well-watered, and kept in a humid outdoor position.
How do I get rid of spider mites on hinoki cypress bonsai?
Fine webbing on foliage, yellowing or bronzing of needles, weakened growth — worst in hot, dry summers Mist foliage regularly to raise humidity; spray with neem oil or miticide; repeat every 5–7 days until clear
How do I get rid of scale insects on hinoki cypress bonsai?
Waxy brown or white bumps on bark and branches; sap loss causes dieback and sooty mold on sticky honeydew Scrape off manually or dab with rubbing alcohol; treat with horticultural oil, repeating after 14 days
How do I get rid of wood-boring beetles on hinoki cypress bonsai?
Entry holes in bark, sawdust frass, dieback of branches as larvae tunnel through the cambium layer Keep tree vigorous — borers target stressed plants; remove and destroy infested wood; no curative spray once larvae are inside