Giant Marsh Marigold (Caltha polypetala)
Giant Marsh Marigold is a larger version of Marsh Marigold, growing about twice the size. Giant Marsh Marigold has green foliage and bright-yellow, buttercup-like blooms early in the spring. Giant Marsh Marigold make their appearance in late March to early April, usually the first plant to bloom in the spring! This plant grows well as a marginal plant when grown in containers using loam soil amended with at least 30 percent clay or planted directly into the clay soil on banks of natural bottom ponds. Grow 20 - 30 inches tall or taller with clump-like habitat.
Height Grow 20 - 30 inches tall
Width Spreads 12 - 24 inches wide
Sunlight Requirements Full sun to part shade
Moisture Requirements Moist to wet soil, place up to 8 inches beneath the surface of the water
Zone Quite cold tolerant, Hardy to zone 3
Plant your Giant Marsh Marigolds in shallow water using loam soil with a heavy clay content or directly into the clay soil in your natural bottom pond. Giant Marsh Marigolds can be planted 6 - 8 inches beneath the surface of the water in full sun to part shade. If cut back once after blooming, Giant Marsh Marigold makes a second appearance with new blooms in the summer! Giant Marsh Marigold grows with a clump-like habitat and clumps can be divided each year. This plant is native to the Americas and is quite cold tolerant. Cold hardy to zone 3