Troubleshooting
Lawrence's Coelogyne problems — and how to fix them
Lawrence's Coelogyne (Coelogyne lawrenceana) 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.
Root rot
Caused by a medium that stays wet too long. Repot every two to three years into fresh bark; inspect roots and trim any that are brown and mushy.
Scale insects
Waxy brown scale can colonise pseudobulbs and leaf undersides. Remove manually with a cotton swab dipped in rubbing alcohol and follow up with a horticultural oil spray.
Pseudobulb shrivelling
Indicates water stress. Check the root system — if healthy roots are present, increase watering frequency. Shrivelled pseudobulbs in winter may indicate the plant has been kept too warm and dry.
Failure to bloom
Requires a distinct cooler, drier winter rest to initiate flower spikes. Ensure temperatures drop to 10-15°C and watering is reduced from late autumn through winter.
Botrytis on flowers
Grey mould can infect open flowers in high-humidity, low-airflow conditions. Improve ventilation and avoid misting flowers directly.
Prevent lawrence's coelogyne problems before they start
Most lawrence's coelogyne issues are care-mismatch, not bad luck. Dial in the basics:
Lawrence's Coelogyne problems — FAQ
Why is my lawrence's coelogyne root rot?
Caused by a medium that stays wet too long. Repot every two to three years into fresh bark; inspect roots and trim any that are brown and mushy.
Why is my lawrence's coelogyne scale insects?
Waxy brown scale can colonise pseudobulbs and leaf undersides. Remove manually with a cotton swab dipped in rubbing alcohol and follow up with a horticultural oil spray.
Why is my lawrence's coelogyne pseudobulb shrivelling?
Indicates water stress. Check the root system — if healthy roots are present, increase watering frequency. Shrivelled pseudobulbs in winter may indicate the plant has been kept too warm and dry.
Why is my lawrence's coelogyne failure to bloom?
Requires a distinct cooler, drier winter rest to initiate flower spikes. Ensure temperatures drop to 10-15°C and watering is reduced from late autumn through winter.
Why is my lawrence's coelogyne botrytis on flowers?
Grey mould can infect open flowers in high-humidity, low-airflow conditions. Improve ventilation and avoid misting flowers directly.