This also holds true for shrubs and even perennials, he adds. Again, it is fortunate that most insects and diseases only attack specific plants. Imagine the consequences if one borer could descend on any and every tree. Their population would build up so quickly that soon there would be few, if any, remaining trees. A nice assortment of trees and shrubs also adds the element of variety and interest to the landscape, Goodspeed says.
Most plants have times throughout the year when they are more attractive than others.
As the flowers of one plant begin to fade, another may start to bloom or produce colorful foliage. A yard that only has junipers planted is one dimensional. It may be ok in the winter when snow covers some of the limbs, but the rest of the year it is drab. Such a planting is also more susceptible to scale, root rots and other juniper problems. This concept can be overdone, however, if you are not careful, he says.