Many plants for landscaping remind people of childhood homes, farms and yards or are used to recreate memorable landscapes such as formal or cottage gardens. Many plants for landscaping come in a variety of sizes and colors to fit any landscape design. One of the most popular plants for landscaping is forsythia. For a bold and bright addition to your landscape, opt for the impressive forsythia bush, a landscaping plant prized for its sunny yellow flowers and low maintenance. Forsythia bushes grow as tall as 6 feet and feature sprigs of small yellow flowers during their long spring blooming season. Forsythia are hardy from zones 5 through 8.