Marsh marigolds are among the showiest native plants in the buttercup family. Found throughout cool temperate and sub-Arctic North America, Europe, and Asia, this species grows in clumps and produces large cupped yellow flowers with numerous stamens in the center. The number of petals varies, from five to nine; there are even double-flowered forms. The round, slightly scalloped leaves are glossy and attractive. Marsh marigold requires consistently moist soil, near streams or bottomlands. They bloom in April and attract many early pollinating insects, although in the Midwest, they bloom too early for most butterflies.