Troubleshooting
Hard-leaf Primulina problems — and how to fix them
Hard-leaf Primulina (Primulina sclerophylla) 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.
Overwatering / root rot
Despite its drought-adapted leaves, the root system is not rot-resistant; consistent overwatering in cool winter conditions is the most frequent cause of plant loss — always let the compost dry significantly between waterings in the cooler months.
Scale insects
Flat, brown scale insects can colonise the undersides of the leathery leaves and petioles; scrape off visible scales with a soft brush and treat with neem oil or a systemic insecticide, repeating after 2 weeks.
Prevent hard-leaf primulina problems before they start
Most hard-leaf primulina issues are care-mismatch, not bad luck. Dial in the basics:
Hard-leaf Primulina problems — FAQ
Why is my hard-leaf primulina overwatering / root rot?
Despite its drought-adapted leaves, the root system is not rot-resistant; consistent overwatering in cool winter conditions is the most frequent cause of plant loss — always let the compost dry significantly between waterings in the cooler months.
Why is my hard-leaf primulina scale insects?
Flat, brown scale insects can colonise the undersides of the leathery leaves and petioles; scrape off visible scales with a soft brush and treat with neem oil or a systemic insecticide, repeating after 2 weeks.