The next triad of principles for home landscape design, like proportion, transition and unity, are interrelated: namely, rhythm, balance and focalization. They all pertain to controlling a viewer's eye movement. Rhythm in general is the patterned repetition of a motif. In your home landscape design, the motif could consist of the landscaping plants used, for instance. Landscaping plants of one type could be planted in a row or hedge, effectively channeling the viewer's gaze in one direction, rather than another. The essential element here is line, since nothing controls eye movement more readily than a straight line.
The objective of utilizing such a motif is to direct eye movement, unconsciously, in a manner that is most conducive to appreciating the home landscape design in question. For instance, perhaps the situation of your land holds the potential for a magnificent vista, but your current home landscape design does not take full advantage of it. Or perhaps you have a piece of statuary in your front yard that you want to show off. But if your front yard is full of other interesting items, it might be too "busy" for that item to receive sufficient focus. These and other problems of rhythm can be solved through an understanding of balance and focalization.
Balance refers to consistency of visual attraction and applies to all five of the basic elements: consistency with form, with texture, etc. Understanding balance is, in turn, important for an understanding of focalization. Focalization is the forcing of the viewer’s perspective to a focal point. While it can be achieved through various means, more intense focalization is created through the use of balanced, consistent arrangements of elements.
Let's return, then, to the two problems of home landscape design introjected above. The first is a problem of framing and can be solved by using bold, straight lines. In the photo on Page 3, for instance, a wall serves this purpose (a row of trees could also have been used). The second, a problem of drawing attention to one component in a busy front yard, could be solved by reducing clutter, opting instead for a minimalist style; and through the use either of color or of line. The statue could be surrounded with color that would direct the viewer's eye (focalization) unconsciously to that area. Using landscaping plants with flowers that are red or yellow en masse would do the trick nicely. So would an appropriate use of line. For instance, a straight path of paving stones leading up to the statuary, or bedding plants arranged so as to form a straight edging that will focus the viewer's gaze in the intended direction.
It will be seen from the foregoing discussion that the principles of home landscape design refer to nothing more ethereal than simply arranging the landscaping plants selected in combinations that bespeak a well-reasoned plan. While not pretending to be an exhaustive discussion, the above examples should nonetheless serve to allay the do-it-yourselfer's fears that home landscape design is the exclusive province of wizards with unfathomable powers. Home landscape design is the province not of wizardry, but of planning, problem-solving and a "principled" approach.
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