My only and precious Dendrobium bloomed whole summer. Now it should end flowering and go dormant for winter (should it?). But a new spike appeared. What a crazy plant, starting new before even ending first one. My question is, is this kind of normal?
Not all dendrobiums need a winter rest. If it's one with a lot of Den Phalenopsis in it's parantage then it doesn't. I can't tell from your pics if yours is that sort or not though.
Have to agree with trdyl. They will do what they want. My Den. Super Star x Ise 'Pearl' bloomed this spring, bloomed again all summer, grew two keikis and now has flower spikes on a few of it's branches and I was going to rest it for the winter.