As one evaluates the effectiveness of his or her greenhouse, there are a number of areas to consider. In addition to making choices about what type of material to use in greenhouse construction and how to ventilate or heat the building, one must also take into account their greenhouse irrigation system. Commonly most individuals or businesses will hand water their plants. While this may be effective on a very small scale, medium to large greenhouse owners may not realize the money and time they are wasting by using this outdated system of watering especially for those attempting to compete on a commercial level.