Troubleshooting
Ritchie's Monadenium problems — and how to fix them
Ritchie's Monadenium (Monadenium ritchiei) 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.
Root rot
Caused by overwatering or poorly draining soil; particularly damaging to the tuberous rootstock. Allow the soil to dry adequately and use fast-draining mix.
Mealybugs
Cottony deposits at leaf axils or on roots indicate an infestation. Treat with 70% isopropyl alcohol or a systemic insecticide.
Leaf drop in winter
Natural semi-deciduous behaviour in response to cooler temperatures and reduced light; resume normal care in spring.
Sap irritation
The milky latex is highly irritating to skin, eyes, and mucous membranes. Always wear gloves and eye protection when pruning or repotting.
Spider mites
Dry indoor air encourages mites; increase air circulation and treat with neem oil or a suitable miticide.
Prevent ritchie's monadenium problems before they start
Most ritchie's monadenium issues are care-mismatch, not bad luck. Dial in the basics:
Ritchie's Monadenium problems — FAQ
Why is my ritchie's monadenium root rot?
Caused by overwatering or poorly draining soil; particularly damaging to the tuberous rootstock. Allow the soil to dry adequately and use fast-draining mix.
Why is my ritchie's monadenium mealybugs?
Cottony deposits at leaf axils or on roots indicate an infestation. Treat with 70% isopropyl alcohol or a systemic insecticide.
Why is my ritchie's monadenium leaf drop in winter?
Natural semi-deciduous behaviour in response to cooler temperatures and reduced light; resume normal care in spring.
Why is my ritchie's monadenium sap irritation?
The milky latex is highly irritating to skin, eyes, and mucous membranes. Always wear gloves and eye protection when pruning or repotting.
Why is my ritchie's monadenium spider mites?
Dry indoor air encourages mites; increase air circulation and treat with neem oil or a suitable miticide.