Troubleshooting
Pelargonium 'Deacon Mandarin' problems — and how to fix them
Pelargonium 'Deacon Mandarin' (Pelargonium 'Deacon Mandarin') 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.
Grey mould on faded blooms
Dense double flowers hold damp and rot. Deadhead frequently and keep air circulating around the plant.
Drying out quickly
Heavy flowering in small pots draws water fast in heat. Check daily in summer and water before the compost shrinks back.
Few flowers, lush leaves
Too much nitrogen or too little light favours foliage. Give full sun and switch to a high-potash feed.
Pelargonium rust
Brown pustules under the leaves develop in humid, crowded conditions. Remove affected foliage and improve airflow.
Prevent pelargonium 'deacon mandarin' problems before they start
Most pelargonium 'deacon mandarin' issues are care-mismatch, not bad luck. Dial in the basics:
Looking for pelargonium 'deacon mandarin' in general rather than its problems? Read the full pelargonium 'deacon mandarin' care guide — light, water, soil and feeding.
Pelargonium 'Deacon Mandarin' problems — FAQ
Why is my pelargonium 'deacon mandarin' grey mould on faded blooms?
Dense double flowers hold damp and rot. Deadhead frequently and keep air circulating around the plant.
Why is my pelargonium 'deacon mandarin' drying out quickly?
Heavy flowering in small pots draws water fast in heat. Check daily in summer and water before the compost shrinks back.
Why is my pelargonium 'deacon mandarin' few flowers, lush leaves?
Too much nitrogen or too little light favours foliage. Give full sun and switch to a high-potash feed.
Why is my pelargonium 'deacon mandarin' pelargonium rust?
Brown pustules under the leaves develop in humid, crowded conditions. Remove affected foliage and improve airflow.