When do you put your Orchids outside in the UK

[RosieC]

I would like some advice from some UK growers as to when you put your orchids outside.

Previously I've always grown in the house, but now I have some that I intend to have outside for the summer but I'm not sure when it's safe to do that.

I have some Den Phal types which I know others grow outside in the UK and I would like them to get the higher light levels offered outside. I also have a Cym which I plan to summer outside as well as a few other little things. Things like my Phals will stay inside.

I guess that's a secondary question... which Genuses do you put outside for the summer in the UK?

Just wondering if anyone has any experience they can share with me to help with this question. I have some shelving all ready to receive some plants, but don't want to risk them getting too cold if I put them out too early.