Troubleshooting
Blue China Fir problems — and how to fix them
Blue China Fir (Cunninghamia lanceolata 'Glauca') 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.
Brown dead inner foliage
Normal annual needle shed from older inner branches; remove by hand to maintain appearance.
Root rot
Caused by poorly drained, waterlogged soil. Improve drainage at planting and avoid overwatering.
Wind scorch
Exposed sites cause needle browning on windward side. Provide a sheltered position or wind-break planting.
Scale insects
Armoured scales can colonise stems. Treat with horticultural oil spray in late spring when crawlers are active.
Prevent blue china fir problems before they start
Most blue china fir issues are care-mismatch, not bad luck. Dial in the basics:
Blue China Fir problems — FAQ
Why is my blue china fir brown dead inner foliage?
Normal annual needle shed from older inner branches; remove by hand to maintain appearance.
Why is my blue china fir root rot?
Caused by poorly drained, waterlogged soil. Improve drainage at planting and avoid overwatering.
Why is my blue china fir wind scorch?
Exposed sites cause needle browning on windward side. Provide a sheltered position or wind-break planting.
Why is my blue china fir scale insects?
Armoured scales can colonise stems. Treat with horticultural oil spray in late spring when crawlers are active.