Plants can be watered with liquids besides water. The effects vary depending on the liquid used. Components other than water can negatively or positively affect the growth of the plant.
Pure water is the best choice; however, other common liquids, which consist of chemicals dissolved or suspended in water, still allow the plant to grow.
Do not water plants with soft drinks. Soft drinks contain sugar that stops the plant from absorbing nutrients and water. Plants watered with soft drinks often die.
Club soda does not contain sugar, but does have carbonic acid and sodium which can act as nutrients. Milk contains calcium. Both of these liquids provide water and nutrients. Plants watered with milk or club soda typically thrive.