The grower I got them from considers them only moderately difficult. I plan on growing them in a mix of peat, sand and eucalyptus leaves. I've read that many of these species are also highly dependant on fungi. I will be adding Trichoderma along with many species of mycorrhizae into the mix for these orchids. I'm not sure what effects (if any) the possible allelopathic tendencies of the eucalyptus leaves will have on the fungus but time will tell I guess.
Is there a mix that you recommend or prefer ?
200 different ones ?!?!? I sure hope you plan on posting some photos on here once they're up and flowering ! I think I speak for everyone when I say "I'd LOVE to see them !!!"