Troubleshooting
Thick-leaf Primulina problems — and how to fix them
Thick-leaf Primulina (Primulina crassifolia) is generally low-drama, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Root rot from overwatering
The thick leaves conceal early symptoms of overwatering until root rot is advanced; if a plant suddenly collapses despite infrequent watering, check the roots immediately — even apparently firm leaves can mask a fully rotted root system.
Fungus gnats in wet compost
Wet, peat-heavy compost encourages fungus gnat larvae which damage the shallow root system; switch to the recommended gritty, fast-draining mix and apply a layer of horticultural sand or grit to the compost surface as a preventative top-dressing.
Prevent thick-leaf primulina problems before they start
Most thick-leaf primulina issues are care-mismatch, not bad luck. Dial in the basics:
Thick-leaf Primulina problems — FAQ
Why is my thick-leaf primulina root rot from overwatering?
The thick leaves conceal early symptoms of overwatering until root rot is advanced; if a plant suddenly collapses despite infrequent watering, check the roots immediately — even apparently firm leaves can mask a fully rotted root system.
Why is my thick-leaf primulina fungus gnats in wet compost?
Wet, peat-heavy compost encourages fungus gnat larvae which damage the shallow root system; switch to the recommended gritty, fast-draining mix and apply a layer of horticultural sand or grit to the compost surface as a preventative top-dressing.