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Unidentified ?tuber? in garden.

There is quite a lot of this in our garden. It is about 5 cm diameter and has a white interior which is quite like a turnip in consistency. The only largish thing nearby is a silver birch and an iceberg rose. Any idea what it might be? Thanks for your help 



  • Hampshire_HogHampshire_Hog Posts: 1,089
    No idea maybe some type of fungus the tiny white fibres look a little like mycelium, I'm sure someone will know 😕

    "You don't stop gardening because you get old, you get old because you stop gardening." - The Hampshire Hog
  • Hostafan1Hostafan1 Posts: 33,678
    I have no idea but I'd like to know.
  • B3B3 Posts: 24,413
    Did you throw a yam on the compost heap?
    In London. Keen but lazy.
  • DovefromaboveDovefromabove Posts: 82,724
    How big is a whole one?
    “I am not lost, for I know where I am. But however, where I am may be lost.” Winnie the Pooh

  • Ante1Ante1 Posts: 2,650
    @jonaucklanddo you have a mirabilis jalapa (Four o'clock, beauty of the night, marvel of Peru) in your garden? I have them and they have a similar roots.

  • FlinsterFlinster Posts: 883
    Yucca roots are like that too...
  • josusa47josusa47 Posts: 3,531
    It's a fossilized Bounty bar.  Your house was a sweetshop in the Carboniferous era.
  • FlinsterFlinster Posts: 883
  • As there is a yucca a few feet away from where I found this, it sounds as though that is its source. the root must be a least a metre long as i did not get to the end of it. There were also  quite a few of the same root under an adjacent paving stone. it is a massive root for a modest Yucca?
  • BobTheGardenerBobTheGardener Posts: 11,391
    edited April 2019
    I removed a 1m x 1m (top growth) yucca from my front garden.  The root spread was at least the same size and I gave up after digging down over a metre.  That was about 3 years ago and.. it has grown back!  The roots on mine were on average about 5cm diameter but some larger - the roots are for water storage.
    A trowel in the hand is worth a thousand lost under a bush.
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