Pest identification
What's eating my chinese juniper 'itoigawa'?
Spider mites (Oligonychus spp.)
Signs: Foliage turns dusty, dull, or bronzed; fine webbing visible between branchlets; worst in hot, dry summer conditions
Control: Mist foliage frequently to raise humidity; apply neem oil or miticide; rinse thoroughly with water to dislodge mites and eggs
Juniper scale (Carulaspis juniperi)
Signs: Tiny white or grey armored scale encrusts bark and foliage, causing yellowing and eventual branch dieback
Control: Apply horticultural oil in late winter; remove scale manually with a soft brush; repeat with systemic insecticide if needed
Bagworms (Thyridopteryx ephemeraeformis)
Signs: Silk-and-foliage bags hanging from branchlets; larvae inside strip foliage, causing localized dieback
Control: Pick off and destroy bags by hand in fall or winter; apply Bt or spinosad in late spring targeting young larvae
Keep chinese juniper 'itoigawa' pest-free
Healthy plants resist pests best. Get the basics right:
- What eats chinese juniper — the species this cultivar belongs to
- What's wrong with my plant? — the diagnosis apps compared
- Common chinese juniper 'itoigawa' problems & fixes
- Chinese Juniper 'Itoigawa' watering schedule
- Chinese Juniper 'Itoigawa' light requirements
- Full chinese juniper 'itoigawa' care guide
Chinese Juniper 'Itoigawa' pests — FAQ
What is eating my chinese juniper 'itoigawa'?
Chinese Juniper 'Itoigawa' bonsai is most commonly attacked by spider mites, which thrive in sheltered, warm conditions. Juniper scale and bagworms also pose serious risks, causing browning and tip dieback. Aphids cluster on new shoots. Regular inspection and good air circulation around the bonsai minimize build-up of all four pests.
How do I get rid of spider mites (oligonychus spp.) on chinese juniper 'itoigawa'?
Foliage turns dusty, dull, or bronzed; fine webbing visible between branchlets; worst in hot, dry summer conditions Mist foliage frequently to raise humidity; apply neem oil or miticide; rinse thoroughly with water to dislodge mites and eggs
How do I get rid of juniper scale (carulaspis juniperi) on chinese juniper 'itoigawa'?
Tiny white or grey armored scale encrusts bark and foliage, causing yellowing and eventual branch dieback Apply horticultural oil in late winter; remove scale manually with a soft brush; repeat with systemic insecticide if needed
How do I get rid of bagworms (thyridopteryx ephemeraeformis) on chinese juniper 'itoigawa'?
Silk-and-foliage bags hanging from branchlets; larvae inside strip foliage, causing localized dieback Pick off and destroy bags by hand in fall or winter; apply Bt or spinosad in late spring targeting young larvae