Rorippa palustris
Rorippa palustris · Brassicaceae
The gardener's calendar
Ideal time to plant rorippa palustris: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Family
- Brassicaceae
- Type
- Annual or biennial herb
- Adult height
- 20 to 60 cm
- Flowering
- Spring to summer (April-September)
- Foliage
- Deciduous
- Hardiness
- Excellent, very hardy
- Natural habitat
- Wetlands, riverbanks, marshy areas of Europe and Asia
Care
Watering
Small-flowered watercress loves moist environments and must never dry out. Keep the soil constantly moist, even slightly saturated if the plant is growing in natural terrain. In cultivation, regular and generous watering is essential, especially during active growth in spring and summer.
Light exposure
Choose a sunny or partially shaded location for optimal growth. The plant tolerates partial shade well, particularly in regions with hot summers. In shaded areas, flowering will be less abundant but the plant will remain vigorous.
Soil and substrate
This species thrives in moist, organic-rich soils that are slightly acidic to neutral. A peaty or clay-loamy substrate enriched with compost is ideal. Avoid overly dry soils or excessively chalky terrain.
Fertilizing
Moderate fertilizer application at the start of the season is more than sufficient. Prefer a balanced fertilizer or one slightly rich in nitrogen to encourage foliage growth. In naturally moist and rich environments, no fertilizer is needed.
Pruning and deadheading
Regularly remove spent flowers to prolong blooming. You can cut back the plant after flowering to prevent excessive self-seeding. At the end of its cycle, allow a few stems to dry on the plant if you want it to self-sow.
Diseases and pests
Small-flowered watercress is generally robust and rarely suffers from serious diseases. Watch for rust or mildew if humidity is excessive and air circulation is poor. Adequate spacing and good ventilation prevent most fungal issues.
Did you know?
Small-flowered watercress is a wild crucifer very common throughout Europe, often regarded as a weed, but it proves to be a valuable host plant for several butterfly and beneficial insect species. Its tiny pale yellow flowers and elongated seed pods make it easily recognizable in wet meadows and transitional zones between water and land.
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
Add this plant to my garden →Plants from the same family
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Tips generated and checked by Viridia — adapt them to your local climate.