How to Maintain a Marsh Marigold

The marsh marigold (Caltha palustris) is a perennial flowering plant that, as the common name implies, is most at home in wet, marshy environments. A member of the buttercup family, it bears small yellow flowers from March until June, when it goes dormant. Marsh marigolds grow to 18 inches tall and wide with little care – other than copious amounts of water – when grown within zones 3 through 7 on the U.S. Department of Agriculture Plant Hardiness Zone Map.

Mulch
10-10-10 fertilizer (optional)

Instructions

- 1
  Keep the soil wet, to a depth of 6 inches, at all times. It can also be grown in a boggy environment with its roots under water. If the soil dries out the plant will drop its leaves and flowers.
- 2
  Add 2 inches of mulch to the soil around the garden-planted marsh marigolds to help retain moisture. Pine needles are the ideal mulch for this plant.
- 3
  Fertilize the marsh marigold in spring, just prior to it producing new growth, but only if it failed to thrive the previous season. Marsh marigolds generally don't require fertilizer. Use a water-soluble 10-10-10 fertilizer, at the rate listed by the fertilizer manufacturer.

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