Dendrobiums are tall with elongated pseudobulbs (stems) topped by modest sized leaves. Their shoots look like bamboo canes and should not be cut back because even after the leaves fall from the oldest pseudobulbs they continue to provide sustenance to the plant. You should only cut them back, if they are shriveled.
Dendrobiums like to grow in a very small pot, often the pot looks ridiculously small compared to the height of the plant. This presents some problems because they tend to be top-heavy. You can keep them from tipping over by placing them in clay pots. You can also use broken brick, cobblestone or pea gravel in the bottom of the pot to weigh it down. Precise staking of Dendrobiums to make them well-balanced is also critical. I used twist ties and tied them up around a sturdy stake.
These orchids grow quickly throughout summer and normally take a rest during winter. Dormant buds erupt into shoots from the base of the pseudobulb usually in spring. They should be repotted after blooming and sadly they often resent repotting and in extreme cases can be killed if repotted at the wrong time. Dendrobiums prefer to be repotted only as new growth appears.
These orchids are easy to grown indoors but need more light (they need to be in a bright window in your home) then the popular, Phalaenopsis.
Here’s a picture of my Dendrobium that bloomed in January 2012.
Hope that helps,
Feel free to leave comments or questions here and you can always email me at email@example.com with pictures of your orchid.