Thicket-forming refers to a plant or shrub that grows in dense clusters or thickets. Synonyms for this term can include clump-forming, bushy, crowded, dense, tangled, and entangled. These adjectives are commonly used to describe plants that grow and spread extensively, often making it difficult to walk or see through them. Thicket-forming plants provide excellent habitats for a range of wildlife including birds, small mammals, and insects. Some common examples of thicket-forming plants include blackberries, raspberries, and honeysuckle. When looking to add a thicket-forming plant to your landscape, consider its growth rate, size, and ultimate height to ensure it will not become invasive or a nuisance.