Calla is a genus of flowering plants known for its striking, trumpet-shaped flowers. These plants are commonly found in wetland areas and are often associated with marshy environments. The most well-known species is the Calla lily, which is popular in gardens and floral arrangements due to its elegant appearance. The Calla lily features a unique structure with a spathe, a modified leaf that surrounds the flower cluster, and a central spike called a spadix. These plants thrive in moist soil and can grow in various climates, making them a favorite among gardeners and landscape designers.