Troubleshooting
Blue Holly 'Blue Princess' problems — and how to fix them
Blue Holly 'Blue Princess' (Ilex × meserveae 'Blue Princess') 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.
No berries without a male
'Blue Princess' is female and needs a male pollinator such as 'Blue Prince' nearby. Without one, the plant flowers but sets no fruit.
Iron chlorosis
Pale, yellow leaves with green veins in alkaline soil. Lower soil pH, mulch with acidic materials, and apply chelated iron to restore colour.
Winter leaf scorch
Drying winter wind and sun brown leaf edges. Plant in a sheltered spot, water well before freeze-up, and consider an anti-desiccant in exposed sites.
Scale and spider mites
Cause sticky residue, sooty mould or stippled leaves. Inspect undersides, improve vigour, and treat with horticultural oil when needed.
Prevent blue holly 'blue princess' problems before they start
Most blue holly 'blue princess' issues are care-mismatch, not bad luck. Dial in the basics:
Looking for blue holly 'blue princess' in general rather than its problems? Read the full blue holly 'blue princess' care guide — light, water, soil and feeding.
Blue Holly 'Blue Princess' problems — FAQ
Why is my blue holly 'blue princess' no berries without a male?
'Blue Princess' is female and needs a male pollinator such as 'Blue Prince' nearby. Without one, the plant flowers but sets no fruit.
Why is my blue holly 'blue princess' iron chlorosis?
Pale, yellow leaves with green veins in alkaline soil. Lower soil pH, mulch with acidic materials, and apply chelated iron to restore colour.
Why is my blue holly 'blue princess' winter leaf scorch?
Drying winter wind and sun brown leaf edges. Plant in a sheltered spot, water well before freeze-up, and consider an anti-desiccant in exposed sites.
Why is my blue holly 'blue princess' scale and spider mites?
Cause sticky residue, sooty mould or stippled leaves. Inspect undersides, improve vigour, and treat with horticultural oil when needed.