Cool growing Bulbophyllums

Here's a list of some that prefer C-I conditions (ie I can't grow them well or at all):

Monosepalum dischorense (former Bulbo)
B. pleurothallidanthum
B. denophyllum
B. tentaculiferum
B. macphersonii
B. ankylochele
B. alkmaarense
B. alticola

*There are others in the Hapalochilus section/genus that do best grown cool. I just can't think of them at the moment. Search here for old posts by Dale or Jon. They both grew a number of Bulbos. in cool conditions.

 

Some of those on Zach's list may not do well 50f night temperature. Actually I grow more than half of those on his list and some of them don't care(do well) even 55f.
PS, I am hesitated to recommend any Bulbo that might do well at 50f since my night time temperature is 55f min. in winter.

 

Well then, I stand corrected! Sorry about that...

Marni, Jon always grew it cooler, and Chris kept it in his fridge tank thing. Mine never really liked the 60s lows I was giving it.

 

Monosepalum dischorense is not a cold or cool grower IMO. Mine grew best intermediate(mid-high 50s at night and mid 70s during the day) and it always gave me problems during the cool winter months.
Try a search here and see what others said about it. A photo, especially a repeated post will tell the story.
PS, I don't think Jon grew it cool(not by my definition of "cool" anyway). Chris had been experimenting things quite a bit. If memory doesn't fail me, he had not had a great result with this species.

Learn from my failure, don't be so eager to divide it for cash or trade....

 

I suggest Bulbophyllum elisae from Australia.. I don't have this one myself but it should do well in similar conditions to Den. speciosum

(wow, first post in almost 3 years!)

 

Over the last few years I've kept most of my bulbophyllums in a space with winter night temperatures ranging 35-55 F and days 45-75, not ideal for most and fatal for more than a few. The two species that seem to grow very well at these temps, though I haven't bloomed either yet:
--thaiorum--never grew much for me until they started getting cool/cold winters
--delitescens--just got this last summer so haven't tried it with a warm winter, it is however growing strongly right now

Species that grow okay, and mostly bloom in season, with these winter temps but do better kept I/W:
--longiflorum
--eberhardtii--supposedly syn. longiflorum
--rothschildianum
--longissimum
--medusae
--pecten-veneris (tingabarinum)
--odoratissimum, plus a related but un-ID'd species
--albociliatum--though this died during a hot and dry spell last summer
--setaceum--same fate as albociliatum
--angustifolium--haven't bloomed this in 3 years so might need warmer winters
--plumatum
--treschii
--moniliforme
--tridentatum
--lilacinum

Not sure how much help this is...