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Caltha palustris

Marsh Marigold

Loved by Pollinators Hardiness H7

Bright yellow, buttercup-like flowers appear above rounded glossy leaves on Caltha palustris in early spring. This native marsh marigold is ideal for pond margins, bog gardens and permanently damp ground, where it also provides useful early food for pollinators.
SKU: CALT-2-Y
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Plant Details

Flowering Months

January, not a flowering month
February, not a flowering month
March, not a flowering month
April, flowering month
May, flowering month
June, not a flowering month
July, not a flowering month
August, not a flowering month
September, not a flowering month
October, not a flowering month
November, not a flowering month
December, not a flowering month

Size

Max Height
0.1 m — 0.5 m
Max Spread
0.1 m — 0.5 m
Growth Habit
Grows in tight bunches from base, forming rounded groups.

Planting Position

Sunlight Indicates how much direct sunlight the plant needs each day. Full sun means 6+ hours, part shade is filtered or morning sun, and full shade is little to no direct sun.
Full Sun
Aspect Aspect refers to the direction the planting spot faces (north, south, east or west). It affects light levels, warmth and exposure.
South West
Exposure Exposure describes how sheltered or exposed a plant’s position is, particularly to wind and weather.
Exposed
Hardiness Hardiness indicates how well a plant tolerates cold conditions outdoors. Higher ratings generally mean greater frost tolerance.
Hardiness H7 (< −20 °C) Extremely hardy

Ideal Soil Conditions

Soil Type Soil type describes the texture of the soil (clay, sand, loam, chalk). This affects drainage, nutrients and how roots grow.
Loam
Soil Moisture Soil moisture tells you how wet or dry the soil should be for best growth. Match this to your garden conditions for healthier plants.
Poorly-drained
Soil pH Soil pH measures how acidic or alkaline the soil is. It affects nutrient availability and can impact plant growth.
Acid Alkaline Neutral

Plant Uses & Merits

Merits
  • Generally pest-free
  • Loved By Pollinators

Caltha palustris Description

Caltha palustris is a hardy native waterside perennial that forms clumps of rounded, rich green leaves. Clusters of glossy deep yellow flowers open in early spring, bringing colour to ponds and bog gardens before many later aquatic plants begin growing. Mature clumps reach around 30 to 50cm high and spread gradually through short rhizomes. Plant in full sun in rich, boggy soil at the water’s edge or in a suitable aquatic basket with the crown close to water level. It is particularly well adapted to wet Irish conditions but should not be planted in an ordinary border that dries during summer. Cut back fading growth after flowering if a tidier appearance is preferred.

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