Dendrobium nobile hybrids are popular for their show of brightly colored flowers along the stems in late winter and early spring. They are easy to grow, but they have a couple of unique cultural requirements.
When the new growth begins, these Dendrobiums like to have an increase in water and fertilizer. Culture during spring and summer is similar to phalaenopsis, with reduced light, increased water, and fertilizer every two weeks. In the fall, cultural needs change drastically. Bright light, cooler temperatures, and no fertilizer will help to initiate flower buds. Water normally so that the canes do not shrivel. Buds will appear when the night temperatures are cooler and the growths have fully matured. This is usually in mid-winter, with blooms opening in January and February.
When these plants are grown indoors at home, its best that they be placed outside in the fall to benefit from the cooler temperatures at night and brought inside just before the frost arrives. They then need to be placed in a relatively cool location (such as an unheated room or an enclosed porch) until buds start to form.
Do not overpot the plants. They like to be root-bound and do well in relatively small pots. Clay pots suit them well with regular seedling bark mixture. Some growers also add long-fibered sphagnum moss and charcoal for these Dendrobiums.
Keikis or off-shoots may form on the canes, when the roots are about two inches in length; these may be twisted and pulled out and potted as new plants. If plants produce all keikis and no blooms, too much fertilizer and temperatures too warm at night are usually to blame.
Last edited by Bud; 02-14-2012 at 11:26 PM..
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I am hoping someone can give me a little help here to get me started on the right track. I recently purchased my first den. I have lots of other orchids, but I was getting very confused about the type that I have and what it's name is. This is what was on the tag Den. Nobile Sanset x Den Nobile Supramala Yuki . I can't find either of those names anywhere to find out cultural advice. From the sticky I gather it needs a winters rest, does this mean I don't water even though it is in bloom? Some articles that I've read say it can go outside once it warms up like cyms. Am I on the right track here. So many different types and so much information. It is in bloom now and I don't want to kill it. I'll post another pic of it, there's 1 over on another link. Thanks for the help 
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