Unkraut German for pest plants - is natures opposition to the leadership of gardeners. Unkraut is an every day term used to describe a plant considered undesirable. The word—commonly applied to unwanted plants in human-controlled settings, such as farm fields, gardens, lawns, and parks—carries no botanical classification value. Indeed, a number of plants that many consider Unkraut are often intentionally grown in gardens and other cultivated settings. The definition of Unkraut is very much i ...