what's the hardest orchid you've grown?

[diego_p]

I know is kind of a broad question and there are a bunch of factors to consider like light, temp, humidity etc. But there are those people that can grow and bloom stanhopeas (just an example) in different parts of the US even the world. And then there are those who know how hard it is to grow a pleurothalid orchid (again, just an example)

Then there are those who envy and are envied for growing certain plants that we just wish we could grow or are proud to gloat.

Which is your most challenging orchid? Whether it be that you've had multiple ones and they have all died, or you've had one for the past few years and all you got is nothing but growths.

This is just out of curiosity, I wanna know.