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Question - I have a long privet hedge but a large section has died. Is there a disease that affects privet hedges, and are there any remedies? If the soil is infected what fast-growing shrub could I replace it with?
Privet (Ligustrum ovalifolium) is highly susceptible to honey fungus, Armillaria mellea, and this is almost certainly the cause of death. There is no cure.
Remove the infected hedge as soon as you can, but don’t compost any material. You will almost certainly find the tell-tale, black bootlaces, or rhizomorphs, on the woody trunks and these are bioluminescent. They glow in the dark, once exposed to oxygen.
The obvious replacement is the round-leaved laurel, Prunus laurocerasus 'Rotundifolia'. This fast-growing glossy evergreen is rarely affected by honey fungus, but may need three trims a year.
The slower-growing variegated Highclere holly, Ilex x altaclerensis ‘Golden King’, or the prickly evergreen Berberis x stenophylla both make good hedges and a yearly trim usually suffices.
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