Question
I have recently purchased a tier-type lucky bamboo plant with pebbles and ceramic vase. Some of the stems are having black spots in them. Roots are fine. I am worried about whether the stems are turning black. How should i take care of it and is it possible for the stem to turn back to normal healthy colour from the black spots.

Answer
Hi Ajay
The first and foremost thing to do is to look for a healthy plant. This can be made sure by the odor that the plant emits. If a bad odor is coming from the plant, then it is in poor health. Bamboo should smell nice and fresh.
For the bamboo plant to grow properly, in soil or in water, choose a pot or vase that is at least 2 inches larger than the plant.
If you have chosen water for your lucky bamboo, then fill the bottom of the vase with decorative stones or pebbles, to keep the plant upright. The water level should be just to the top of the stones.
Make sure that you wash the plant, stones and change the water at least once a week. This will prevent the bamboo from rotting.
The vase or the vessel you keep the plant in, should be cleaned to remove any calcium or mineral deposits on the plant stem.
Try to add pure water to the plant, instead of tap water. Tap water contains fluoride which is not healthy for it. On the other hand, pure water is rich in iron and helps in producing greener and healthier leaves.
If you wish to grow the plant in soil, take equal parts sand, peat moss and soil to ensure optimal drainage. The soil should be kept damp between waterings. Moreover, while watering your plant, saturate the pot fully.
Since bamboo grows naturally in the shade of taller rainforest trees, an indoor location, with bright, indirect light, is perfect for it. Even artificial lighting will work well. Direct sun can cause the leaves to burn, whereas less light will lead to weak growth, stretching and poor coloration.  kathy