Caltha palustris polypetela


Greater Marsh Marigold

Mass of lush serrated dark green leaves with large yellow flowers. Almost evergreen. Has a long flowering period. Flowers Apr/July

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This kingcup, largest of the marsh marigolds.  Flowers early in the season forming a mound of large leaves and big butter-yellow flowers, that  can provide a sculptural focus for larger ponds. Supplied bare-rooted.

Top tip: Produces a large mass of foliage useful for masking pond edges. Flower stems droop to the water surface where they readily root and can be harvested.

Flowers: March/April

Height of plant: 20-60cm from crown.  .

Propagation: Can be grown from seed, from rooted offsets from flower stems, or divided in the Spring and early Summer.

How to plant:  Plant into a 5lt or 10lt planting basket using heavy garden loam or Westland Aquatic Soil and place on a shelf in the pond.  Fill the planting basket to a depth so that the crown of the plant is level with the rim. Hold the plant securely and fill in with soil all around the roots, pressing the soil down very firmly until the planting crate is almost filled to the brim.  For aesthetic purposes, the soil can then be top dressed with no more than 1cm of pea gravel.

Recommended planting depth:  The planting depth for this plant measured from soil surface to water surface and not including any gravel dressing is 5-20cm.