Another way that you can arrange plants in your landscape is by creating a focal point. Pick a superstar plant that you love or even position a sculpture or other object as the focus of your garden bed. Then arrange plants around the focal point to bring it all together.
In landscaping, focal points are plants or objects that stand out from the background. Place focal points within the landscape in a way that will draw attention to a particular area of the garden. The purpose of focal points in a landscape are many. Focal points do several things in a landscape. First, they create a resting spot in your garden. Focal points are a great way to guide a person to a destination. They are an important tool for garden designers. Why? Because they are a way to control how people will view the garden. When used correctly, focal points will create a special moment (or moments) in your garden.
It’s important to note that focal points do not exist in a vacuum. Focal points are always viewed WITH the other plants and elements in your landscape. So, while they are the element that stands out and guides the eye, they also have to fit with the overall aesthetic of the landscape they are placed into.
Source: Arrange Plants In Your Garden – 3 Simple Ways – Pretty Purple Door