Caltha palustris, commonly known as the marsh marigold, is a perennial plant found in wetland areas across North America, Europe, and Asia. It typically blooms in early spring, producing bright yellow flowers that can reach up to 2 inches in diameter. The plant thrives in moist, marshy environments and is often seen along the edges of ponds and streams. The leaves of Caltha palustris are large, heart-shaped, and can grow up to 12 inches wide. While the flowers are attractive, all parts of the plant contain toxic compounds, making it important to handle it with care. This species is a vital part of its ecosystem, providing habitat and food for various wildlife, including pollinators and amphibians.