The document discusses principles of planting design, including:
1) Artistic composition is derived from physical plant properties like forms, textures, and colors. Horizontal and vertical shapes create different effects.
2) Physical plant properties like stems, leaves, bark, and buds determine texture. Texture appears finer from farther away. Warm and cool colors are used.
3) Unity is created through repetition, variety, emphasis, balance, sequence, and scale. Simplicity prevents monotony while variety adds interest. Elements are balanced on either side of axes. Sequence moves the eye through the landscape. Proper scale relates to human size.