| Some Dendrobium are evergreen and will keep their leave all year others as you correctly stated are deciduous. I have 5 that are growing like weeds and three of them have just started to spike. The others like yours are deciduous and pretty much just sitting there. Most of the Dendrobium that the big box stores are selling are the evergreen type and do well. Keep an eye out for new growths and hop for the best. You will most likely be fine. If you can send pictures that would help
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