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.
Salt burn and root tip death
This high-altitude species is exceptionally sensitive to mineral salts. Tap water causes progressive root-tip death and leaf-tip browning. Switch to rainwater or RO water and flush the medium with plain soft water monthly.
Lack of flowering
Requires a distinct day-to-night temperature drop of at least 8–10°C, particularly in autumn, to initiate buds. Plants kept at uniform warm temperatures indoors rarely flower. Move to a cool position (night min 13°C) in autumn.
Fungal spotting on leaves
High humidity combined with poor airflow causes Cercospora or Botrytis spotting on the large leaves. Ensure brisk air circulation at all times and treat affected tissue promptly with a systemic fungicide.
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 salt burn and root tip death?
This high-altitude species is exceptionally sensitive to mineral salts. Tap water causes progressive root-tip death and leaf-tip browning. Switch to rainwater or RO water and flush the medium with plain soft water monthly.
Why is my lawrence's coelogyne lack of flowering?
Requires a distinct day-to-night temperature drop of at least 8–10°C, particularly in autumn, to initiate buds. Plants kept at uniform warm temperatures indoors rarely flower. Move to a cool position (night min 13°C) in autumn.
Why is my lawrence's coelogyne fungal spotting on leaves?
High humidity combined with poor airflow causes Cercospora or Botrytis spotting on the large leaves. Ensure brisk air circulation at all times and treat affected tissue promptly with a systemic fungicide.