Are we talking about Cannabis or Canna?

Take a hatchet or something similar and chop em up.

Either way I'd say no, just make sure they're dead. (hatchet will do that for you)
SouthernGuerilla Reviewed by SouthernGuerilla on . Cana roots in compost` I've heard there are some problems that can occur in your compost if you put your canna roots in there. Yes, no ? thanks for the info Rating: 5