Caltha palustris
perennial RHS AwardN. America Native

Marsh Marigold

Caltha palustris

Not currently listed at our partner nurseries.

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Essentials

At a Glance

Plant Type

Perennial

Height

12 inches

Width

18 inches

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7

Water

High

Humidity

High

Lifespan

Herbaceous perennial

Native To

North America, Europe, Asia

Toxicity

All parts are toxic if ingested raw.

The Story

Plant Bio

Caltha palustris is a clump-forming, herbaceous perennial that thrives in wet, boggy soils. It features glossy, heart-shaped green leaves and brilliant, buttercup-like yellow flowers in early spring. As one of the earliest native wetland plants to bloom, it provides a vital nectar source for emerging pollinators and brings cheerful color to water margins before other plants have emerged.

Bloom Period:

J
F
M
A
M
J
J
A
S
O
N
D
EarlyLate

Uses & Benefits:

Ornamental UsesProvides a spectacular burst of early spring color in water gardens, pond margins, and boggy areas where few other plants thrive. Its glossy, heart-shaped leaves remain attractive after the flowers fade.
Practical UsesExcellent for soil stabilization along stream banks and pond edges. Its dense root system helps prevent erosion in wet, unstable areas.
Ecological BenefitsServes as a critical early-season food source for bees and other pollinators. It provides shelter for small aquatic animals and amphibians around its base.

Marketplace

Where to Buy

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Planting

How to Grow

  1. Select a location with full sun and constantly wet soil
  2. Amend soil with compost to improve moisture retention
  3. Dig a hole as deep as the container
  4. Place the plant in the hole with the crown at soil level
  5. Backfill with soil and water in thoroughly
  6. Ensure the soil never dries out, especially during establishment

Pro Tip

Plant in submerged pots in water gardens to control spread and simplify maintenance.

Keep It Thriving

Care Guide

Do

  • Provide consistent, ample moisture; this plant loves wet feet.
  • Allow it to self-seed for naturalized colonies in appropriate areas.
  • Remove yellowing leaves after flowering as the plant may go dormant in summer heat.

Don't

  • Do not let the soil dry out, even for a short period.
  • Avoid planting in deep shade, which reduces flowering.
  • Do not ingest any part of the plant, as it is toxic when raw.

Seasonal Care Calendar

TaskJanFebMarAprMayJunJulAugSepOctNovDec
Divide
Plant
Spring Cleanup

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Brilliant pond and stream edge plantingEssential component for rain gardensNaturalized drifts in wet meadows

Companion Plants

Iris versicolor Juncus effusus Lobelia cardinalis Matteuccia struthiopteris Darmera peltata

Multiply

Propagation Methods

Good to Know

Common Questions

Marsh Marigold questions

What zones can Marsh Marigold grow in?

Marsh Marigold is hardy in USDA Zones 4–7. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Marsh Marigold deer resistant?

Yes — Marsh Marigold is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Marsh Marigold bloom?

Marsh Marigold typically blooms in early spring through mid-spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Marsh Marigold need full sun?

Marsh Marigold does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Keep exploring

Grow Marsh Marigold with confidence

See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.

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