North America Native Plant

White Marsh Marigold

Botanical name: Caltha leptosepala leptosepala

USDA symbol: CALEL7

Life cycle: perennial

Habit: forb

Native status: Native to Alaska âš˜ Native to Canada âš˜ Native to the lower 48 states  

White Marsh Marigold: A Stunning Native for Your Water Garden If you’re looking to add a splash of pristine white beauty to your bog garden or water feature, the white marsh marigold might just be your perfect match. This charming native perennial brings early-season blooms and wildlife benefits to wet ...

White Marsh Marigold: A Stunning Native for Your Water Garden

If you’re looking to add a splash of pristine white beauty to your bog garden or water feature, the white marsh marigold might just be your perfect match. This charming native perennial brings early-season blooms and wildlife benefits to wet areas where many other flowers simply can’t thrive.

What is White Marsh Marigold?

White marsh marigold (Caltha leptosepala leptosepala) is a delightful native forb that belongs to the buttercup family. Unlike its woody cousins, this herbaceous perennial dies back to the ground each winter and emerges fresh each spring. Don’t let the marigold name fool you – it’s not related to the common garden marigolds you might know, but it earned this moniker thanks to its cheerful, cup-shaped blooms.

Where Does It Call Home?

This mountain-loving native has quite an impressive range across North America. You’ll find white marsh marigold naturally growing throughout the western regions, including Alaska and Canada, as well as many western U.S. states. Its distribution spans from Alberta and British Columbia down through the Rocky Mountain states of Colorado, Montana, Wyoming, Idaho, and Utah, and extends west to Washington, Oregon, and Nevada, with populations even reaching Arizona and New Mexico’s high elevations.

Why Your Garden (and Local Wildlife) Will Love It

There’s something magical about a plant that can handle what most flowers can’t – consistently wet feet and cool mountain conditions. Here’s why white marsh marigold deserves a spot in the right garden:

  • Early pollinator magnet: When few other flowers are blooming in late spring and early summer, these white beauties provide crucial nectar for flies, beetles, and small bees
  • Authentic native appeal: Supporting local ecosystems while adding genuine regional character to your landscape
  • Unique niche filler: Perfect for those challenging wet spots where other perennials struggle
  • Low maintenance: Once established in the right conditions, it largely takes care of itself

Garden Design Ideas

White marsh marigold isn’t your typical border perennial – it has very specific needs that make it perfect for certain garden styles:

  • Bog gardens: Ideal for naturalistic wetland plantings alongside sedges and native irises
  • Water features: Beautiful planted along pond edges or in shallow water gardens
  • Alpine gardens: Perfect for recreating high-elevation mountain meadow conditions
  • Rain gardens: Excellent choice for areas that stay consistently moist

Growing Conditions: Keep It Cool and Wet

Success with white marsh marigold comes down to understanding its mountain origins. This plant thrives in conditions that mimic its natural alpine and subalpine wetland habitat:

  • Moisture: Consistently wet to moist soil is non-negotiable – think bog-like conditions
  • Light: Full sun to partial shade, but appreciates some afternoon protection in warmer climates
  • Temperature: Prefers cool conditions and is hardy in USDA zones 3-7
  • Soil: Thrives in rich, organic, mucky soils typical of wetland areas

Planting and Care Tips

Getting white marsh marigold established requires attention to its specific needs, but the payoff is worth it:

  • Timing: Plant in spring when soil can be worked but is still consistently moist
  • Location: Choose the wettest spot in your garden – even areas with standing water work well
  • Soil prep: Amend with compost or well-rotted organic matter to create rich, mucky conditions
  • Watering: Keep soil constantly moist to wet – never let it dry out
  • Mulching: Use organic mulch to help retain moisture and keep roots cool
  • Fertilizing: Generally unnecessary if grown in rich, organic soil

Is White Marsh Marigold Right for Your Garden?

Be honest about your garden conditions before falling for this beauty. White marsh marigold is absolutely perfect if you have consistently wet areas and live in a cooler climate. However, if you’re dealing with typical garden beds that dry out between waterings, or you live in a hot, humid climate, this mountain native will likely struggle.

The ideal white marsh marigold gardener has a water feature, natural wet area, or is willing to create bog-like conditions. If you’re passionate about native plants and have the right conditions, this charming wildflower will reward you with early-season blooms and the satisfaction of supporting local wildlife.

Remember, success with specialty natives like white marsh marigold comes from working with their natural preferences rather than trying to force them into unsuitable conditions. When you get it right, you’ll have a unique and beautiful addition that truly belongs in your landscape.

White Marsh Marigold

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Magnoliidae

Order

Ranunculales

Family

Ranunculaceae Juss. - Buttercup family

Genus

Caltha L. - marsh marigold

Species

Caltha leptosepala DC. - white marsh marigold

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA