🌿 Watercress (Nasturtium officinale) is a rapidly growing, aquatic or semi-aquatic perennial plant, native to Europe and Asia, and one of the oldest known leaf vegetables consumed by humans. Belonging to the Brassicaceae family, it is related to garden cress, mustard, radish, and wasabi, all known for their piquant flavor.
📏 Botanical Features:
Hollow, floating stems
Pinnately compound leaves
Small clusters of white-green flowers
🔬 Taxonomy:
Synonyms: Nasturtium nasturtium-aquaticum, Sisymbrium nasturtium-aquaticum
Sometimes classified under genus Rorippa, but molecular evidence shows closer relation to Cardamine
Despite its Latin name, watercress is not closely related to ornamental nasturtiums (Tropaeolum majus)
🌱 Cultivation:
Suitable for large-scale and garden-scale growth
Thrives in slightly alkaline water; ideal for hydroponics
Can grow 50–120 cm tall if unharvested
Leaves become bitter when flowering begins
Sold fresh in supermarkets in sealed bags or as sprouts
🌍 Distribution & History:
Commercial cultivation started in the UK in 1808 by William Bradbery along the River Ebbsfleet, Kent
Popular in counties such as Hertfordshire, Hampshire, Wiltshire, Dorset
Alresford hosts an annual Watercress Festival attracting 15,000+ visitors
Known in Huntsville, Alabama (1940s) as the “watercress capital of the world”
💪 Health Benefits:
Rich in iron, calcium, iodine, manganese, folic acid, vitamins A, B6, C, and K
Significant source of omega-3 fatty acids (16:3n-3 Hexadecatrienoic acid, 45 mg/100 g)
Traditionally used as a stimulant, diuretic, expectorant, digestive aid, and for scurvy prevention
Contains phenethyl isothiocyanate (PEITC) which may help inhibit angiogenesis and provide anti-cancer properties
⚠️ Side Effects & Precautions:
Avoid crops grown in manure-contaminated water (risk of liver fluke Fasciola hepatica)
Watercress can inhibit cytochrome P450 CYP2E1, potentially affecting drug metabolism
🌱 Sowing Instructions:
Propagation: Seeds
Pretreatment: None
Stratification: None
Sowing Time: All year round
Sowing Depth: Surface-sown; lightly press into moist soil
Sowing Mix: Hydroponic setup, coir, or standard potting mix
Germination Temperature: 18–22 °C
Location: Bright, keep substrate moist but not waterlogged
Germination Time: 7–14 days
Watering: Keep constantly moist during the growing season
💧 Fresh seeds – ideal for hydroponics or garden cultivation
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| Type of Delivery | Processing Time | Insured | Possible Delays | Notes |
|---|---|---|---|---|
| Standard | 7–10 business days | ❌ | 7–14 days | Basic shipping option |
| Priority | 1–7 business days | ❌ | 3–10 days | Faster processing, not faster shipping |
| Insured | 1–7 business days | ✅ | 3–10 days | Refund if the package is lost (up to €150) |
🕒 Estimated Delivery Time:
Within the EU: 3–20 days
Worldwide: 5–30 days
Example delivery times to the USA: 27, 22, 19, 17, 13 days
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