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Giant Marsh Marigold (Caltha polypetala) 

Plant Description

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

Planting Instructions

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

 

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