How fast does honey fungus spread?
Emily Sparks
Published May 28, 2026
How fast does honey fungus spread?
It has been proven a single fungus can spread in an area as large as 37 acres and infect all the trees in its path. The growth is underground in the main at the rate of approximately 1 metre each year, although it is thought that in warm, humid conditions it might travel much further.
Does honey fungus affect grass?
The two most damaging are the honey-coloured honey fungus and fairy rings. Fairy rings attack grass roots and produce brown toadstools in summer.
How do you get rid of honey fungus?
Break the cycle and spread
- Remove sources of infection.
- Consider surrounding plants.
- Cultivate the soil.
- Install a plastic sheet barrier.
- Leave the bed fallow.
- Cover the bed with woven ground cover fabric.
- Temporarily replant with grass.
What to do with soil that has fungus?
How Do I Get Rid of Fungus in Garden Soil?
- Get rid of the sick plants. Once your garden is infected, you can’t save the plants.
- Clean up all garden debris at the end of the season.
- Rotate your crops.
- Plant disease-resistant varieties.
- Use a fungicide.
How long does honey fungus take to kill trees?
Honey fungus symptoms The die back of upper parts of the plant. This can happen quickly particularly in hot dry weather, or may take years to gradually kill off branches.
When does honey fungus appear on a plant?
Honey fungus, characterised by honey-coloured toadstools, often appears at the start of autumn. The fungus attacks and kills the roots of many woody and perennial plants while spreading through root systems and infecting nearby plants. Any infected plants must be removed – but even then it’s extremely hard to eradicate the disease.
What does honey fungus do to a tree?
Honey Fungus is a major cause for tree removal and subsequent removal/ grinding of stumps. We have therefore produced a short document on what to look for and the best ways to get rid of the disease if you find yourself in the unfortunate position to have it within your garden or area of management. The official name for Honey Fungus is Armillaria.
How long does it take for honey fungus to die?
Honey fungus can be hard to identify as it spreads underground and doesn’t always bear fruiting bodies above ground (mushrooms or toadstools). Indeed, it can take years for the fungus to kill the shrub or tree, and some symptoms, such as dieback, may be mistaken for symptoms of other problems such as a lack of water or planting in the wrong place.
What can I do about honey fungus in my garden?
Composting leaves from gardens like Judy’s where honey fungus is around is not risky, but chipping and using the wood from known honey fungus casualties is not a good idea (although scientists seem to be divided as to whether or not honey fungus is spread this way).
How did I get honey fungus on my lawn?
I feared the stump might eventually get honey fungus. And sure enough after five years I saw the first fructifications on the tree stump and very soon later armillaria toadstools appeared in my lawn. Not being confident of my identification – I still fear to eat a wild common mushroom – I took it to college.
Can a lawn fungus spread out of control?
Under adverse circumstances, however, such as long rainy seasons, droughts, overwatering, and substandard lawn care, fungi can spread out of control, leaving you with a blighted lawn. The good news is that you can treat many cases of lawn fungus—and prevent future cases—just by following good lawn care practices.
Why does my grass have fungus in it?
Your lawn is naturally full of fungi and spores, some harmless and some problematic, but the right (or wrong) conditions can cause grass fungus to erupt into a harmful disease. The most common causes of a lawn fungal disease are: Signs that your lawn may have a fungal disease include: Brown patch of dead grass in lawn.
How does honey fungus spread in the air?
There are two ways that Honey Fungus spreads. Spores do spread in the wind, but the most common method of expanse is underground by rhizomorphs (fungal roots). Rhizomorphs are black boot-lace like threads that push through soil.