In the past I've had a pitcher plant and a Venus flytrap.
You will need some sort of heat in your green house for them to live through the winter.
Don't make the same mistake as me ( one of the reasons I no longer have them
) don't water them with tap water .I only did it the once because i wasn't thinking and that was the end of my Venus flytrap. It must be rain water .
Good luck with it
, I do miss my tropical plants.