Troubleshooting
Clementine problems — and how to fix them
Clementine (Citrus × clementina) 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.
Sour or poorly coloured fruit
Almost always too little heat and sun, or harvesting too early. Maximise sunlight and let fruit ripen fully on the tree before picking.
Flower and fruit drop
Beyond natural thinning, heavy drop is caused by drought stress, irregular watering or underfeeding during fruit set. Keep moisture and nutrition steady.
Interveinal chlorosis
Yellow leaves with green veins indicate iron or magnesium deficiency, common in pots and hard-water areas. Correct with a chelated citrus micronutrient feed.
Scale, mealybug and spider mites
Common on indoor and conservatory citrus, leaving honeydew, sooty mould and stippling. Treat with horticultural oil or insecticidal soap and improve ventilation.
Prevent clementine problems before they start
Most clementine issues are care-mismatch, not bad luck. Dial in the basics:
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 sour or poorly coloured fruit?
Almost always too little heat and sun, or harvesting too early. Maximise sunlight and let fruit ripen fully on the tree before picking.
Why is my clementine flower and fruit drop?
Beyond natural thinning, heavy drop is caused by drought stress, irregular watering or underfeeding during fruit set. Keep moisture and nutrition steady.
Why is my clementine interveinal chlorosis?
Yellow leaves with green veins indicate iron or magnesium deficiency, common in pots and hard-water areas. Correct with a chelated citrus micronutrient feed.
Why is my clementine scale, mealybug and spider mites?
Common on indoor and conservatory citrus, leaving honeydew, sooty mould and stippling. Treat with horticultural oil or insecticidal soap and improve ventilation.