Aucuba japonica, also called the gold-dust plant, can be susceptible to fungal infections. Fungi attack plants in a number of ways, including through the roots and on the leaves and stem of the plant. Treating fungal problems can keep the plant alive and return it to a healthy state. However, the type of fungal infection must be identified before treatment can be effective. Knowing what types of infection to look for is important in treating aucuba plants.
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Look at the roots of the aucuba plant if it shows signs of declining health, such as wilting. A fungal root problem can occur in areas where the aucuba is planted in standing water or soil that is too moist.
Dig the aucuba up and transplant it to another area of the garden. Ensure that the soil is well drained around the gold-dust plant to help prevent it from being exposed to too much water.
Plant the aucuba in the shade or where it will receive only partial sunlight. Full sunlight can promote the growth of fungus on the aucuba.
Some types of fungal infections are visible to the naked eye. White or rust-coloured spots on the leaves are fungal infections, and black or brown leaves and stems may also be infected.
Remove leaves and stems that show signs of fungal infection, such as coloured spots, discolouration and wilting. Use scissors or trimming shears to remove the infected portions of the plant.
Dispose of the infected portions of the plant in the garbage to prevent them from spreading the fungal spores to other portions of the garden.
Treat the aucuba japonica with a fungicide according to the manufacturer's instructions. Fungicide will kill any spores that remain on the plant.
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