Troubleshooting
Callous-lipped Slipper Orchid problems — and how to fix them
Callous-lipped Slipper Orchid (Paphiopedilum callosum) 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.
Crown rot
Water pooling in the centre of the leaf rosette combined with cool temperatures causes rapid crown rot — always water at the base.
Root rot
Overwatering or a dense, poorly draining medium causes dark, mushy roots; the most common cause of plant loss.
Leaf tip yellowing
Accumulated fertiliser salts or fluoride in tap water damages leaf tips; use filtered or rainwater and flush monthly.
Scale insects
Brown scales shelter along leaf bases and the undersides of the thick, strappy leaves.
Failure to rebloom
Insufficient light for photosynthesis limits the plant's energy to produce a new flower spike; move gradually to a brighter spot.
Prevent callous-lipped slipper orchid problems before they start
Most callous-lipped slipper orchid issues are care-mismatch, not bad luck. Dial in the basics:
Callous-lipped Slipper Orchid problems — FAQ
Why is my callous-lipped slipper orchid crown rot?
Water pooling in the centre of the leaf rosette combined with cool temperatures causes rapid crown rot — always water at the base.
Why is my callous-lipped slipper orchid root rot?
Overwatering or a dense, poorly draining medium causes dark, mushy roots; the most common cause of plant loss.
Why is my callous-lipped slipper orchid leaf tip yellowing?
Accumulated fertiliser salts or fluoride in tap water damages leaf tips; use filtered or rainwater and flush monthly.
Why is my callous-lipped slipper orchid scale insects?
Brown scales shelter along leaf bases and the undersides of the thick, strappy leaves.
Why is my callous-lipped slipper orchid failure to rebloom?
Insufficient light for photosynthesis limits the plant's energy to produce a new flower spike; move gradually to a brighter spot.