Cool growers for New Zealand winters

[headbanger333]

Hello all, did not know what title to give this new thread, so hope those who know will find it. I have run out of room in my small North facing property to put more orchids so I wondered if there are any cool/cold growing orchids that could be grown on the South West side of my house. Auckland does not have a frost but winter temps can drop to around 3C overnight, days around 14C. They would be in a plastic covered grow house. They would get mid to late afternoon sun. Many thanks.