Honey Fungus is caused by direct contact with the roots of an infected plant or tree. It is also caused by the rhizomorphs (see above for explanation) spreading underground from the infected plants to other healthy plants.Some plants are more vulnerable to catching Honey Fungus whilst others are relatively resistant to it. The list below shows some common plants in these categories. It is true that healthy plants are less likely to be attacked by Honey Fungus compared to plants which are weak and growing in poor conditions.|solution=The only course of action is to dig out all infected plants and burn them. Try to remove as much of the root system as possible because this is where the disease is most easily transmitted to other plants.For smaller areas a degree of further control can be achieved by removing the top 60 to 90 cm (2 to 3 foot) of soil and replacing it with infection free soil.When replanting, choose plants that are resistant to Honey Fungus (see the list above) and definitely avoid those most susceptible to Honey Fungus (see list above). Keep plants as healthy as possible by regular mulching and feeding.
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Honey fungus
As the name suggests Honey fungus is a fungus. It exists primarily on dead plant material, but can also become a parasite feeding on live plant and tree roots. It attacks a wide variety of plant life ranging from trees to bulbs. The first symptom you will probably notice with plants and trees affected by Honey Fungus is general ill-health. Leaves do not grow so well, are discoloured and fruit is small. Surprisingly, flowering plants may produce larger than normal flowers immediately before they die back completely. Then you will notice white to cream honey-coloured growths of the Honey Fungus appearing in the soil around the base of the plant / tree - see the above picture. These growths are fan-shaped.When you pull the plant up, there will probably be dark brown rhizomorphs which look like brown to black root-like growths which resemble bootlaces. In advanced cases these root-like growths appear above the soil level. In many cases, beneath the bark of the trunk and branches you will see white mycelium. These form a thin creamy-white layer with a strong mushroom smell.