ROOT OF THE PROBLEM
QUESTION:
This appeared around my tree in Canberra and seems to be killing it. What is it, and how can I control it while protecting the rest of my garden from what it may be?
ANSWER:
These are tell-tale signs of Australian Honey Fungus (Armillaria luteobubalina), a deadly soil fungus killing trees across southern Australia. Also known as Armillaria root rot, it can be difficult to control, as your photograph shows the disease has already spread along sub-surface roots.The affected tree, mushrooms, stump, roots and surrounding soil need to be removed from the property and disposed of but not in the curbside green bin. Avoid planting anything in that area and leave it fallow for 12 months or more. To help protect the rest of your garden, applying Neutrog’s Popul8 can boost beneficial micro organisms. Apply theproduct 2–3 times per year
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