Good afternoon, how are you? I have a Dendrobium Orchid which lost its blooms a couple of weeks ago. My questions are:

1. Does it bloom another time on the same stalks? If yes when or should I cut them?

2. In the picture you can see different coloured roots. Which are still good, which have to be cut? And should I repot it?

3. There is a new stalk growing but there are also the older ones which just stopped growing. Will they continue growing? Should I cut them? Can I propagate new orchids from them?

Thanks for the answer in advance.

There is a lot of information I have to tell you about your Dendrobium. It is a Dendrobium phalaenopsis and it is in trouble. Mainly due to need of a re-pot. You show a plant who has roots that are getting in trouble because the media, sphagnum moss is breaking down and holding too much water.
Orchid roots need air to survive. When the media breaks down the roots die back and the plant's health suffers.
Once the growths reach maturity, they won't grow further. They can however bloom again.
Check out our orchid forums where you can read threads about successfully growing orchids. Go to the American Orchid Society website @ www. AOS.org to download pdf files on how to grow Dendrobiums. All of these points are meant to help you to keep your plant alive.
Also check the plant databases for pictures of Dendrobiums.

NEVER trim off a growth that is firm and green. Same can be said for roots.
Cut off flower stalks when they turn brown.

Thank you very much for your replies.
I love orchids but I still have alot to learn. As for the watering I only spray water I never water it directly. I will repot it as a first step and the rest after I read through the forums.