I got this plant in November 2014, covered in leaves. From a Mid-West grower so I thought, OK - not deciduous. In the course of the next 2 months it lost all its leaves; they gradually got black spots and then fell off. In the meantime I thought it was a fungal infection and was trying all different remedies with no luck.
Basically for 3 months it has done nothing. I have watered it on the odd occasion to keep the bulbs plump, similar to how I water my Lycaste ( which is now full of buds and has new growth )
I repotted it to see if all the roots were rotten or if there was some other issue going on. Surprisingly, the roots are fine and are even greening up.
So - for those that grow promenaea - do these plants have a dormant period ? Do I wait for new growth before increasing watering ? I can't find much on the internet about dormancy, if any.
---------- Post added at 11:11 AM ---------- Previous post was at 10:41 AM ----------
there's an interesting article on proms from Page 4
http://www.manitobaorchidsociety.ca/.../mos201402.pdf
orchidsarefun 
Promenaea Limelight
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