Great Yellowcress
Rorippa amphibia
- Native to:
- Albania, Algeria, Austria, Baltic States, Belarus, Belgium, Bulgaria, Corse, Czechia-Slovakia, Denmark, Finland, France, Germany, Greece, Hungary, Iran, Iraq, Ireland, Italy, Kazakhstan, Krym, Netherlands, North Caucasus, NW. Balkan Pen., Palestine, Poland, Portugal, Romania, Russia, Sardegna, Spain, Sweden, Switzerland, Transcaucasus, Türkiye, Türkiye-in-Europe, Ukraine
Agnieszka Kwiecień, Nova
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Brassicaceae
- Genus:
- Rorippa
- Species:
- Rorippa amphibia
- USDA Symbol:
- ROAM
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb
- Height:
- 120 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Low
- Bloom Months:
- may,jun,jul,aug
- Bloom Colors:
- yellow
Garden & Ecology Notes
- Wildlife Value:
- waterfowl, small mammals
Soil Requirements
- Soil Type:
- rich, moisture-retentive loamy soil
- pH:
- 6.0 - 7.5 (slightly acidic to neutral)
- Drainage:
- tolerates poor drainage
- Moisture:
- consistently moist
- Notes:
- Commonly found in wetland areas and riverbanks
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–28 days
- Notes:
- Seeds require light for germination and consistently moist to wet conditions.
The above propagation data sourced from Claude AI