What is this poop-like sand doing in my pot saucer/tray? I saw them today. I lifted the pot(Dracaena Reflexa [Song of India]) and couldn't find a bug or anything. So I thought maybe it's the sand falling from the pot holes, but they are too perfect and makes me wonder if it's really sand falling from the holes or a work of art. But if it is a work of art, then who is the artist?

Also, I crushed some and found them to be sand. The plant is kept in home.

Click to zoom:enter image description here

  • Are they approximately the diameter of the drainage holes? (Although I've never seen that happen)
    – J. Musser
    Dec 15, 2016 at 1:18
  • @J.Musser Nope. They are smaller than the drainage hole.
    – 4-K
    Dec 15, 2016 at 12:43
  • 1
    Look to be about the size of cockroach poop, but you'd've noticed those, and they don't hang out in pot soil. Dec 17, 2016 at 16:21
  • I’ve been suspicious of a coriander plant I just bought. There were little round bits of soil all on my counter. Yesterday I just took out a weevil that was on the wall. This morning I actually saw one of the soil balls jump from the pot. I’ve just put the plant outside. I take it it’s weevils that are causing this? Aug 18, 2018 at 9:17
  • 1
    Lynne, welcome to Gardening SE! Your post is a bit unclear for me - are you saying “it’s weevils that are causing the things in the picture in the question above“ or “I have a similar problem, could this be cause die by weevils”? If it’s the former, please edit your post to make it clearer (How to Answer should help), if it’s the latter, it’s not an answer. You may always ask a new question, let me encourage you to take the tour and browse our help center, especially How to Ask.
    – Stephie
    Aug 18, 2018 at 17:25

1 Answer 1


My hypothesis is that it is worm poop. Also known as worm castings. If there is a lot of sand in the pot that would explain why they break into sand. Here is a picture I found of worm castings from a rich soil: https://highyieldorganics.net/products/worm-castings (URL to archive version)

  • 1
    I'm pretty sure this is right. I see this a lot. OP is probably using garden soil.
    – user10810
    Apr 10, 2017 at 4:19
  • Yes, exactly like this except the color. The one you showed is black I color. The one in my pic is identical to the color of soil.
    – 4-K
    Apr 11, 2017 at 13:08

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