Troubleshooting
Hoya Nummularia problems — and how to fix them
Hoya Nummularia (Hoya nummularia) 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.
Overwatering and root rot
Yellowing, dropping leaves and mushy stems point to a too-wet mix. Let the chunky medium dry well between waterings and ensure free drainage.
Leaf shrivelling
Prolonged underwatering shrivels the small coin leaves. Resume a steady dry-then-water rhythm and check the rootball core for moisture before deciding.
Shy flowering
Too little light. Increase bright indirect exposure and leave the bare peduncles intact, as the fragrant umbels rebloom from these spurs.
Mealybugs
They hide among the dense small leaves and flower clusters, leaving sticky honeydew. Treat with 70% isopropyl alcohol on a swab and insecticidal soap, checking the tangled growth carefully.
Prevent hoya nummularia problems before they start
Most hoya nummularia issues are care-mismatch, not bad luck. Dial in the basics:
Looking for the species overview? Hoya — the full care guide.
Other Hoya varieties
Hoya Nummularia problems — FAQ
Why is my hoya nummularia overwatering and root rot?
Yellowing, dropping leaves and mushy stems point to a too-wet mix. Let the chunky medium dry well between waterings and ensure free drainage.
Why is my hoya nummularia leaf shrivelling?
Prolonged underwatering shrivels the small coin leaves. Resume a steady dry-then-water rhythm and check the rootball core for moisture before deciding.
Why is my hoya nummularia shy flowering?
Too little light. Increase bright indirect exposure and leave the bare peduncles intact, as the fragrant umbels rebloom from these spurs.
Why is my hoya nummularia mealybugs?
They hide among the dense small leaves and flower clusters, leaving sticky honeydew. Treat with 70% isopropyl alcohol on a swab and insecticidal soap, checking the tangled growth carefully.