As an experiment, I recently planted cress seeds in different colour cases to see which cress grew the best. However,

Question: As an experiment, I recently planted cress seeds in different colour cases to see which cress grew the best. However, after the experiment, I up rooted the plants (and had them in a sandwich!) The next week, I found the empty containers, and in some the soil had turned green! Is there a scientific explanation for this? Thank You Will
- Keywords:
  cress,
  empty,
  grew,
  plant,
  sandwich,
  seeds,
  soil
Asked by 08wjeffrey to Evan, James on 24 Jun 2011.
- James Hargreaves answered on 24 Jun 2011:
  
  hey 08wjeffrey,
  Did the cress taste good in your sandwich? Without seeing the actual soil, all i can suggest is that it is some kind of mould growth from the wet soil.
  
  What do you think? did it look like mould?
- Evan Keane answered on 24 Jun 2011:
  
  Yes, it does sound a bit like mould. But without a picture of it, it is hard to know for sure. 😀

08wjeffrey commented on 24 Jun 2011:

Yea, it did look fairly dark green, I suppose a bot like mould!

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