Bog gardens can play an important role in your overall garden design, as they provide a perfect way to include lush growth into an otherwise bare and arid landscape. You also have a much wider range of plants to choose from, as opposed to selecting from a smaller range of suitable marginals for use in a small garden pool.
Bog gardens are characterized by areas of permanently wet, saturated soil, and are almost always informal gardens, often with large, giant plants. They typically look much “wilder” in nature, especially when placed alongside more traditional gardens. While you usually can’t let bog gardens truly grow wild, as some pruning and landscaping is necessary, they do provide a chance to let some plants stretch their legs, and can be used to give an impression of greater size and space in your garden area.