Yellow Stainer

Poisonous Poisonous
Autumn Autumn
Spring Spring
Summer Summer

Poisonous causing alarming symptoms but not effecting everybody. Don’t take a chance!

Mushroom Type
Common Names Yellow Stainer
Scientific Name Agaricus xanthodermus
Season Start Jul
Season End Nov
Average Mushroom height (CM) 16
Average Cap width (CM) 16
Please note that each and every mushroom you come across may vary in appearance to these photos.


Starting rounded this flattens to a shallow convex. White with very small scales. The cap bruises chrome yellow quite quickly.


Gills white turning pink becoming grey/brown. Crowded.


White/off-white with a skirt and slightly bulbous base.


Can have a pendulous skirt, this one is stained on the top surface by spores.


White bruising chrome yellow when cut especially at the base of the stem.


Hedgerows, grassland, open woodland and beside roads and paths usually in large groups or rings.

Spore Print

Purple/brown. Ellipsoid to ovoid.




11 comments for Yellow Stainer

  1. Bob Dutton says:

    Can field and yellow stainer grow in the same ring

    1. Poppy Ives says:

      They can be right beside each other, but not from the same organism.

  2. Eddie says:

    I have what I believe to be yellow strainers growing in my garden.
    How can I get rid of these?

    1. Eric Biggane says:

      I’m not sure how to get rid of them permanently, fungicides can damage the ecosystem of your garden. Place them in a bag and put them in your landfill bin to dispose of them.

  3. Only Me says:

    About 20 years ago I bought some of these from a local Garden Centre in Somerset believing them to be anything but Yellow Stainers. I started cooking them in a Risotto and the smell was very early on utterly disgusting! Very worrying how a garden centre can buy something wrongly identified by their wholesale provider.

  4. Patricia Smith says:

    Can I put yellow stainers in with my garden compost?

    1. Eric Biggane says:

      Yes as the compost should break any toxins down and these will not be transferred to any plants the compost is used on.

  5. Dale says:

    Hi I found what look to be yellow stainers due to the stems slightly yellow at the base when cut, however, I can’t say they smell of ‘ink’ if anything they smell of aniseed ?

    Is this unusual not to have the smell ?

    I note the younger ones gills are white which I understand is another tell tale.

    I won’t be sampling them but was hoping to experience the smell which is always stated as an indicator.

    1. Eric Biggane says:

      If you try cooking any of the toxic Agarics, they turn yellow and the smell becomes very strong. Sometimes it can be hard to pick up the smell when fresh.

  6. Rosa says:

    Mushrooms growing on old remaining tree trunk stump
    They look just like chestnut mushrooms. Are they likely to be edible ?

    1. Eric Biggane says:

      I could only mention the edibility of mushrooms if I saw them. Chestnut mushrooms do not grow on wood.

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