Light, water, temperature, humidity, ventilation, fertilization, and soil are chief factors affecting plant growth, and any one of these factors in incorrect proportions will prevent proper plant growth indoors. Light is probably the most essential factor for house plant growth. The way our environment is designed influences the way we choose to behave. Though our desire to accomplish a task may be sincere, our environment can either keep us engaged or distract us from our objective. Every element in our environment creates a frame of reference that we rely on to make decisions.