There are 2 major killers of bamboo orchid plants. Bamboo orchids need moisture but too much of a good thing will kill them. They love water but their roots don't like to be kept wet. They are often grown in volcanic rock or a fast draining medium. You can also add polymers to the medium to hold moisture without making the roots wets. Read my post about using polymers to grow bamboo orchids in. The next major killer of bamboo orchids is fertilizer. Yes the orchids do require fertilizer but use a very weak solution of liquid fertilizer at each watering. Here are some liquid fertilizers that are formulated just for orchid growing:
