Overview
Caltha polypetala is a perennial in the genus Caltha, part of the Ranunculaceae family. Caltha polypetala grows best in full sun and partial shade, and tolerates most soils. Suggested uses include bog gardens, pond edges and wetland areas. It is native to Temp N Hemisphere.
About
Caltha polypetala is a perennial in the buttercup family adapted to persist in wet, marshy ground. It grows where soil remains moist and benefits from humus-rich conditions. Place it in full sun to partial shade at pond margins or in bog gardens. It flowers from March to May, providing an early-season presence in wetland planting.
About the genus
Caltha is a genus of rhizomatous perennial flowering plants in the family Ranunculaceae, to which ten species have been assigned. They occur in moist environments in temperate and cold regions of both the Northern and Southern Hemispheres. Their leaves are generally heart-shaped or kidney-shaped, or are characteristically diplophyllous.
Wikipedia contributors, "Caltha", CC BY-SA 4.0 — Caltha
In the garden
A member of the Ranunculaceae, Caltha polypetala is native to the temperate Northern Hemisphere and occupies marshy habitats. In the garden it performs where the soil stays consistently wet and rich in organic matter, so choose sites that mimic a stream edge or bog. The plant is a perennial and will return each year from its established rootstock. Position the plant where it receives full sun to partial shade; morning sun with some afternoon shelter suits many UK sites. Use a moisture-retentive, humus-rich substrate and avoid locations that dry out between rains. Planting at the actual waterline or in the damp soil immediately adjacent to a pond gives the best results and helps integrate it with other marginal species. Caltha polypetala is well suited to bog gardens, pond edges and constructed wetland areas where persistent moisture is available. Its seasonal interest is concentrated in spring: expect flowering from March to May, when it contributes an early-season sequence on the marsh edge ahead of later perennials.
Growing conditions
Best soil and position for Caltha
- Sunlight
- full sun, partial shade
- Soil type
- moist, rich, humus-rich soil
- Soil moisture
- wet, marshy
Plant details
Caltha polypetala size, habit and characteristics
- Plant type
- perennial
- Suggested uses
- bog gardens, pond edges, wetland areas
- Native to
- Temp N Hemisphere
Care notes
Pruning and caring for Caltha polypetala
- Cultivation
- Prefers consistently moist or wet soil; avoid drought conditions; can be grown in water gardens.
- Pruning
- Remove dead or damaged foliage after flowering to maintain appearance.
- Propagation
- Division in spring or autumn; seed propagation possible but less common.
Frequently asked questions
How do I grow Caltha polypetala?
Prefers consistently moist or wet soil; avoid drought conditions; can be grown in water gardens.
Where is the best place to plant Caltha polypetala?
Caltha polypetala prefers full sun and partial shade.
What soil does Caltha polypetala need?
Caltha polypetala is adaptable and grows happily in most soil types, including moist, rich and humus-rich soil. Aim for soil that stays wet to marshy.
How do I prune Caltha polypetala?
Remove dead or damaged foliage after flowering to maintain appearance.
How do I propagate Caltha polypetala?
Division in spring or autumn; seed propagation possible but less common.
