Roses I have had moderate success with, but orchids I cannot do. I am death to orchids - I guess if I got an internal greenhouse I could do better, but up to this point I am a dismal failure with orchids.
orchids are difficult as each variety/species has its own set of requirements for temp, humidity, light etc..We had a very large greenhouse & my ex did the largest part of the work.
I was primarily the "purchasing agent"!
:^)