I've had this lucky bamboo plant for about two and a half years now,and the other day I noticed the top of the stem had gone a little yellow.A couple of days later,and now around 1/6th of the stem is yellow.The leaves are all still green though.
What's going on?Is it dying because I've never fed it?
Are you growing it in water or soil? If it's been in a restricted container for two years the root system could well have outgrown the container - cut the yellowing stems off (at the nearest node) and put it in a bigger container. Don't worry about feeding it.