| Scientific Name: | Nasturtium officinale |
| Common Name: | watercress |
| Family Name: | Brassicaceae |
| Origin: | Europe, South Asia / India |
| Hardiness Zone: | Zone 6: (-23 to -18 °C) |
| Plant Type: | Aquatic plant, Herbaceous perennial |
| Mature Size: | 0.4 - 0.7m x 2 - 3m (height x width) |
| Habit: | Spreading |
| Form: | Creeping / Mat-like |
| Texture: | Medium - fine |
| Landscape Uses: | Aquatic - ponds, Herb, Medicinal plant, Wetland - bogs |
| Exposure: | Full sun only if soil kept moist, Part sun/part shade, Filtered shade |
| Soil or Media: | Bog |
| Leaves: | Compound, Alternate, Soft flexible, Lustrous, Odd-pinnate, Orbicular, Ovate, Entire, Undulate (wavy) |
| Flowers: | Raceme, White, Pink, May-Jun |
| Fruit: | Silique, Green, Jul-Aug |
| Key ID Features: | |
| Leaves alternate, pinnately compound, 3-9(-13) leaflets, most broadly ovate to orbicular, 1-3cm wide, margin entire and wavy; flowers 4-6mm wide in terminal clusters, white; fruit a silique with tips curved upwards. | |