New Catasetum question...

[Kristaz]

Hi everyone! I am having a few new catasetums delivered from Ecuagenera at the San Fran orchid fest, and these will be my first of the species. I've read they of course are dormant during the winter, but my question is, once I get them settled, how exactly do I know when to start watering them? ( I have some resting dems, and I usually wait u til I see new growth before I water them after the winter) I would greatly appreciate any input, on their dormancy and any other growing tips! I am in Chicago and the weather is currently fluctuating between 35-60 degrees, so I assume that doesn't help much. I will be potting then in 4" vanda baskets with a mix of large bark chunks, (not sure what kind I forages from the forest) charcoal, some volacanic rock and sphag.