I more or less agree with Elaine. These plants reproduce in nature, without any help, so if the conditions are just right (whatever that might be) they should have a chance. Certainly can't hurt to try if they will be in the greenhouse anyway. Might try some different mediums to see what happens. It would be fun to get seedlings without lab conditions. If you try it, document your conditions and you can share with us. Spaths must not grow here, as I've never seen one in person (I'm guessing it's humidity), but If you can get them to propagate by seed there it would be interesting.
