Just like a Spud?

      But, perhaps, almost in reverse; inasmuch as when growing nobody will be disturbing the plant and spreading the wee tubers. 
       I had a biggish plant pot with some "stuff" out of my "Earthmaker"© Composter; very aptly labelled as it happens.  What comes out of stage three of it is almost indistinguishable from Soil.  I mention the fact because it was in said Pot I found  more than three tiny Plants.
      Speaking of Celandines, (which I wasn't, but the Plants were) it was in the Pot I found them.