Landscape Design encompasses several disciplines necessary to achieve a satisfactory result (end product). Landscape Design requires some measure of insight into each of these. Among these disciplines are Aesthetics, Horticulture, Architecture and Psychology.
A practical understanding of Aesthetics or art, when combined with the other disciplines, will enable you to envision the overall layout of your landscape. Additionally, an eye for art allows you to combine various elements of the landscape into a cohesive and flowing design.
Great landscape designers take much of their sense of garden aesthetic from natural landscapes. I encourage you to find and explore areas untouched by the ever encroaching hand of man. God is the greatest landscape architect. Let His creation guide your design. Combinations of color and texture, the mix of beauty that touch your various senses in the wild can be included in a smaller scale in your own landscape.
Horticultural knowledge encompasses a wide range of disciplines but in short it is the science of plants. What plants go where and what conditions each plant requires for optimum growth. How are plants affected by pests, soil conditions, light and water and temperature? How do plants react to pruning and fertilizers? And so on.
Additionally, a basic knowledge of architecture helps us frame the landscape. It helps us determine what hardscapes such as walkways, patios, gazebos, outbuildings, etc., need to be included in our landscape to make it habitable and useful for our defined purposes. Keep in mind, how the landscape will be used. Who will be using the area? How will it be accessed? What is topography of the land? What kind of walls or slopes will be included in the landscape?
How will various areas interconnect and interact?
A general knowledge of psychology is within the grasp of most people. While designing your landscape, you should think about how you would like to use the area(s)? Everything you include in the landscape should contribute to your usage goals. Will the area be used for meetings or family gatherings? Are you trying to create an atmosphere of action or relaxation, an aura of anticipation or peacefulness? Do you intend to exude intimacy or openness with your landscape? As with the interior of your home or business, how the various elements combine and contrast affects the mood and ambiance of your landscape.
Once you have determined what your landscape is meant to accomplish in your life, a knowledge of psychology will help you frame and fill your gardens and landscape with elements that will enhance your intended experiences. How does a particular choice of paving material affect the speed at which you move through your gardens? Do certain elements draw you in? How do certain plants or arrangements affect our mood or the moods of those who experience our landscape? Will a certain water feature distract from or enhance the purposes you envision?