dendrophylax lindenii

I thought you were planning on growing it outside. Yes, AC does reduce humidity. If it is potted (use large bark) humidity is less of an issue. I would suggest partial shade - particularly at mid-day it needs protection from blazing sun. Remember, if this is what you want to grow, it's not a small plant. So if you can accommodate it outside, that would be desirable. If you are concerned about just protection indoors this winter, not a big problem, just don't forget to water it. Again, well-drained medium (lots of air) is the goal.

 

Depending on plant size, just medium or large bark... Angraecums are pretty dominant epiphytes (similar to Vandas) so need to dry out somewhat between waterings - you're aiming for "humid air" around the roots. So whatever it takes to achieve that.Some people have good success with inonrganic media like LECA, for me bark works better. Surface area, and air are the goals.

 

I only tried D. funalis once... didn't make it long term. But that was before I got RO water, so might be worth trying again. Definitely will be a greenhouse baby if I do, though, both for temperature and humidity. If you want to try a more forgiving leafless orchid, Microcoelia stolzii grows nicely outside for me - I keep shady and as damp as I can, but it does put up with the relatively low ambient humidity that it gets between daily waterings, and tolerates the temperatures, both summer highs and winter lows. (It can tolerate more summer heat than I have, based on the grower from whom I got it, who lived farther inland so had warmer summers).

 

Cym lowianum is as tough as any Cymbidium... can tolerate winter temperatures down to freezing (0 deg C), summer heat to around 40 deg C (with a little shading). Not fussy about water quality. Pretty much bullet-proof.

 

It's not rare in cultivation (at least where I live, which is a big Cymbidium-growing region) It is in the ancestry of a large number of standard and intermediate Cymbidium hybrids. As for in the wild, I think that all wild orchids are rare and becoming rarer, as habitats disappear, as well as from overcollection. From the Baker culture sheet in Orchidwiz, "Because of heavy collection pressure, C. lowianum is now very rare in Thailand and is found on only a few inaccessible mountains." It is also native to northern and eastern Burma, and southern Yunnan, China.

As far as fertilizer goes, all Cyms are pretty heavy feeders. I give all of them a generous pinch of time-release fertilizer in the spring to supplement my regular fertilizing.