Pest identification
What's eating my japanese cedar 'globosa nana'?
Cryptomeria scale
Signs: Encrusted needle and stem scales; yellowing then browning needles; dieback inside dense growth where air is stagnant
Control: Apply horticultural oil spray ensuring good coverage inside the canopy; trim out dead interior growth to improve air circulation
Spider mites
Signs: Bronze or rust-tinted foliage; webbing inside the compact crown; most severe in hot, dry spells
Control: Increase humidity around the plant; apply neem oil or miticide spray; ensure adequate watering to reduce plant stress
Aphids
Signs: Soft green or black insects on young shoot tips in spring; sticky honeydew on foliage; minor distortion of new growth
Control: Wash off with water; insecticidal soap spray on affected shoots; natural predators usually control populations without further treatment
Keep japanese cedar 'globosa nana' pest-free
Healthy plants resist pests best. Get the basics right:
- What eats japanese cedar bonsai — the species this cultivar belongs to
- What's wrong with my plant? — the diagnosis apps compared
- Common japanese cedar 'globosa nana' problems & fixes
- Japanese Cedar 'Globosa Nana' watering schedule
- Japanese Cedar 'Globosa Nana' light requirements
- Full japanese cedar 'globosa nana' care guide
Japanese Cedar 'Globosa Nana' pests — FAQ
What is eating my japanese cedar 'globosa nana'?
This dwarf, globe-shaped Cryptomeria faces the same pest pressures as other cultivars: cryptomeria scale, spider mites in hot dry weather, and occasional aphids. Its compact form restricts air movement around foliage, which can worsen scale and mite problems. Check the dense interior foliage regularly and treat early, as problems hidden inside the canopy can escalate quickly.
How do I get rid of cryptomeria scale on japanese cedar 'globosa nana'?
Encrusted needle and stem scales; yellowing then browning needles; dieback inside dense growth where air is stagnant Apply horticultural oil spray ensuring good coverage inside the canopy; trim out dead interior growth to improve air circulation
How do I get rid of spider mites on japanese cedar 'globosa nana'?
Bronze or rust-tinted foliage; webbing inside the compact crown; most severe in hot, dry spells Increase humidity around the plant; apply neem oil or miticide spray; ensure adequate watering to reduce plant stress
How do I get rid of aphids on japanese cedar 'globosa nana'?
Soft green or black insects on young shoot tips in spring; sticky honeydew on foliage; minor distortion of new growth Wash off with water; insecticidal soap spray on affected shoots; natural predators usually control populations without further treatment