Identification: Mulch Fungus (looks like yellow vommit)

Discussion in 'Fungi, Lichens and Slime Molds' started by SanDiegoGardener, Mar 17, 2008.

  1. SanDiegoGardener

    SanDiegoGardener Member

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    Any idea what this is or what is causing it? (and better yet how to kill it) It seems to crop up overnight every few days. There seem to be two types the yellow and the orange. The yellow seems to be more frequent. The texture is very wet and gooey. When I shovel it out I find yellow flecks (spores?) in the mulch below, but it don't seem to see them in the soil.

    As an aside I have not seen any in my big pile of excess mulch pile.
     

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  2. Michael F

    Michael F Esteemed Contributor Forums Moderator 10 Years

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    A slime mould. Harmless, and helpful; it is helping to break down the mulch into nutrients that the plants can use.
     
  3. SanDiegoGardener

    SanDiegoGardener Member

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    It doesn't look like the fruiting body of any slime mold I have seen, but I haven't seen many. In any case despite its alleged "harmless and helpful" status it has an visual aspect that is unacceptable.

    Anything I can do other than continuing to shovel it out?

    Any second opinions on the ID?
     
  4. lorax

    lorax Rising Contributor

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    SD Gardener - check out the "Slimy stuff in my lawn" thread and click the contained link for more info about the probable suspect. It's definitely a grex of slime mold, and by definition won't hurt your plants, in fact as Micheal F said it's helping them...

    If it's really that offensive to you, you might be able to kill it with a solution of tea-tree oil in water, which will also not hurt your plants. Or, if you prefer, a chemical fungicide. I'd urge you not to.
     
    Last edited: Mar 18, 2008
  5. Frog

    Frog Well-Known Member Forums Moderator 10 Years

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    It looks like Fuligo septica, which is edible, so if that is what it is, you could eat it.
    :-)
    frog
     
  6. SanDiegoGardener

    SanDiegoGardener Member

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  7. lorax

    lorax Rising Contributor

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    Well, since the normal attitude of a slime mold is to eat matter that's already dead or in partial decay - vis. your mulch - you shouldn't have any problem with it invading your living plants - vis. your trees etc.

    The orange one looks to be a different variation on the same theme.
     
    Last edited: Mar 18, 2008
  8. Ron B

    Ron B Esteemed Contributor 10 Years

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    Similar ones appear on fresh wood chip piles here.
     
  9. Frog

    Frog Well-Known Member Forums Moderator 10 Years

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  10. SanDiegoGardener

    SanDiegoGardener Member

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    I can't comment on the taste, but it is definitely different, not just more dried out. I suspect it is related, but it is a different color when fresh, and grows more slowly.
     

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