Troubleshooting
Hamilton's Wax Plant problems — and how to fix them
Hamilton's Wax Plant (Hoya hamiltoniorum) 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.
Scale insects on stems
Brown or tan oval bumps fixed to stems and leaf undersides are scale insects; scrape off by hand, then apply horticultural oil or neem oil solution, repeating every 10 days for 4–6 weeks.
Yellowing lower leaves from overwatering
If lower leaves yellow, feel mushy, and drop, the roots may be rotting; unpot to inspect, trim diseased roots, allow to dry, and replant in fresh, dry epiphyte mix before resuming a more cautious watering schedule.
Prevent hamilton's wax plant problems before they start
Most hamilton's wax plant issues are care-mismatch, not bad luck. Dial in the basics:
Hamilton's Wax Plant problems — FAQ
Why is my hamilton's wax plant scale insects on stems?
Brown or tan oval bumps fixed to stems and leaf undersides are scale insects; scrape off by hand, then apply horticultural oil or neem oil solution, repeating every 10 days for 4–6 weeks.
Why is my hamilton's wax plant yellowing lower leaves from overwatering?
If lower leaves yellow, feel mushy, and drop, the roots may be rotting; unpot to inspect, trim diseased roots, allow to dry, and replant in fresh, dry epiphyte mix before resuming a more cautious watering schedule.