Visual coordination in landscape design
Numerous heights, widths, forms, and textures create and shape landscape designs. Plants in a composition must also fit in buildings and other structures around. Generally problems appear when the gardener uses too many plants similar in shape and textures. Carelessness for existing constructions also causes problems in visual perception.
A reiterative and boring landscape can create plants of the same size, shape, and texture such as broad-leaved evergreen shrubs and needle-leaf evergreen trees.
Broad-leaved shrubs and needle-leaved trees grow close to window ledges and often reach second story windows, thus creating security dangers.
The first question to remember, while choosing plants, should be, whether those plants will work well within the planned design. Remember that plants bloom in early spring and will compete with each other in terms of their beauty and fragrance.