Troubleshooting
Clementine problems — and how to fix them
Clementine (Citrus reticulata 'Clementine') 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.
Leaf yellowing
Most often a magnesium or iron deficiency in alkaline soil or tap water. Use a citrus feed with chelated micronutrients and water with rainwater or filtered water if possible.
Scale insects
Brown or white waxy bumps on stems and leaf undersides cause sticky honeydew. Treat with horticultural oil spray; inspect new growth carefully.
Flower and fruit drop
Caused by sudden temperature changes, drought stress, or insufficient light. Maintain stable conditions and ensure at least 6 hours of sun for fruit set.
Prevent clementine problems before they start
Most clementine issues are care-mismatch, not bad luck. Dial in the basics:
- Common mandarin orange problems — the species this cultivar belongs to
- Common clementine problems — our other guide for the same plant
- What's wrong with my plant? — the diagnosis apps compared
- Clementine watering schedule
- Clementine light requirements
- Best soil mix for clementine
- Clementine temperature & humidity
- Full clementine care guide
Looking for clementine in general rather than its problems? Read the full clementine care guide — light, water, soil and feeding.
Clementine problems — FAQ
Why is my clementine leaf yellowing?
Most often a magnesium or iron deficiency in alkaline soil or tap water. Use a citrus feed with chelated micronutrients and water with rainwater or filtered water if possible.
Why is my clementine scale insects?
Brown or white waxy bumps on stems and leaf undersides cause sticky honeydew. Treat with horticultural oil spray; inspect new growth carefully.
Why is my clementine flower and fruit drop?
Caused by sudden temperature changes, drought stress, or insufficient light. Maintain stable conditions and ensure at least 6 hours of sun for fruit set.