Yellow Marsh Marigold
Caltha palustris
- Native to:
- Afghanistan, Albania, Aleutian Is., Austria, Baleares, Baltic States, Belarus, Belgium, Bulgaria, Canada, China, Czechia-Slovakia, Denmark, Finland, Føroyar, France, Germany, Greece, Hungary, Iceland, India, Iran, Iraq, Ireland, Italy, Japan, Kazakhstan, Korea, Krym, Kuril Is., Labrador, Myanmar, Nepal, Netherlands, North Caucasus, Norway, NW. Balkan Pen., Pakistan, Poland, Portugal, Prince Edward I., Romania, Russia, Spain, Sweden, Switzerland, Transcaucasus, Türkiye, Ukraine, United States
Petar Milošević
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Ranunculaceae
- Genus:
- Caltha
- Species:
- Caltha palustris
- USDA Symbol:
- CAPA5
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb
- Height:
- 60 cm
- Light Requirements:
- Part Shade,Shade
- Drought Tolerance:
- Low
- Bloom Months:
- apr,may,jun
- Bloom Colors:
- yellow
Wildlife Benefits
- Bees:
- ★☆☆☆☆ Documented bee visitation (GBIF)
- Butterflies & Moths:
- ★☆☆☆☆ Documented Lepidoptera association (GBIF)
Garden & Ecology Notes
- Wildlife Value:
- bees, flies
- Deer Resistant:
- Yes
Soil Requirements
- Soil Type:
- rich, moisture-retentive loamy soil
- pH:
- 5.5 - 7.0 (slightly acidic to neutral)
- Drainage:
- tolerates poor drainage
- Moisture:
- consistently moist
- Notes:
- Commonly found in marshes and wet meadows
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–60 days
- Notes:
- Seeds require light for germination. Fresh seed germinates best; viability declines with storage.
The above propagation data sourced from Claude AI
Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).
Notes: Seeds require cold-moist stratification for optimal germination.
Source: Claude AI
ORGHPS Germination Guide: Sow immediately, Either the viability of these seeds is short or the species propagates best with fresh seed. Stored seed might be coaxed into germination with temperature cycling and patience. Expose to fluctuation outdoor winter temperatures including freezing for 3 months. Gradually increase light and temperature in the spring. Germination if successful only when GA3 is used. * hydrophilic, bog plant; stand pot in 3 cm water; raise temperature very slowly after germination