Overview
A monochromatic garden is a garden in which a single color is highlighted.
Single-color gardens
Such a garden is planted so that it overwhelms the observer with a single color. While this may seem a rather bland approach at first, such gardens were made popular by the work of famous garden designers such as Gertrude Jekyll and Vita Sackville-West. Sackville-West, for example, created what may have been one of the most famous single-color gardens, the White Garden room of the Sissinghurst Castle Garden.
Many single-color gardens use flowers of different shades, such as light yellow and deep gold, or a range that includes dark burgundy, bright scarlet, and also pink for a red garden. (A similar idea uses analogous colors, such as purple, red, and orange, rather than a single color.) Plants with colored leaves, such as silver leaves or plants with variegated foliage for a white garden, might also be included.
The color for a monochromatic garden may be chosen for any reason, including to fit a small garden, as part of a clean, contemporary design, or to highlight a favorite color. Another possibility is an all-green garden, which may feel peaceful or harmonious. A monochromatic edible garden is possible, but more challenging to design than a flower garden in any color except green. Yellow variegated leaves can be difficult to include in a multi-colored garden, but they blend easily into an all-yellow garden, such as all-yellow Gold Border garden at Wave Hill in New York.
From Wikipedia (CC BY-SA 4.0).