• Watercress microgreens ready to harvest, grown from Deliseeds seeds
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Watercress - microgreens seeds

✨Watercress is the only vegetable to score a perfect 100 on the CDC's Powerhouse Vegetables index - and as a microgreen, you can grow it on your kitchen counter in under two weeks.

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44,00 zł
44,00 zł
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    Tiny leaves, enormous punch — watercress microgreens bring bold peppery fire to every plate.

    Beginner-friendly brassica family crop; grows beautifully in soil or on hydroponic mats with minimal inputs
    Ready to harvest in just 7–12 days from sowing — one of the faster microgreen crops you can grow
    Rich in vitamins A, C, E, and K, plus calcium, magnesium, potassium, and powerful glucosinolates and isothiocyanates
    Bold, peppery flavour similar to mustard or radish — perfect on salads, sandwiches, soups, egg dishes, and seafood
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    Watercress microgreens ready to harvest, grown from Deliseeds seeds

    Details

    Tiny leaves, enormous punch — watercress microgreens bring bold peppery fire to every plate.

    Beginner-friendly brassica family crop; grows beautifully in soil or on hydroponic mats with minimal inputs
    Ready to harvest in just 7–12 days from sowing — one of the faster microgreen crops you can grow
    Rich in vitamins A, C, E, and K, plus calcium, magnesium, potassium, and powerful glucosinolates and isothiocyanates
    Bold, peppery flavour similar to mustard or radish — perfect on salads, sandwiches, soups, egg dishes, and seafood
    FULL SPECIFICATION TABLE

    General Specification

    Common Name Watercress
    Botanical Name Nasturtium officinale
    Seed Type Small, round, reddish-brown; mucilaginous when wet
    Stem/Leaf Color Pale green stems; round, glossy, vivid emerald-green cotyledon leaves
    Flavor & Texture Bold, sharp, peppery flavour similar to mustard and radish; tender and delicate texture
    Seed Count per 10g Approx. 220,000–250,000 seeds per 10 g (based on ~22,000 seeds/oz per True Leaf Market)

    Cultivation Data

    Difficulty Easy
    Preferred Medium Coconut coir, seed-starting mix, or hydroponic grow mat; also well-suited to hydroponic systems (NFT, DWC)
    Seeding Density (1020 tray) 10–15 g per 1020 tray (25×50 cm); ~12 g is a reliable midpoint
    Seeding Density (10x10 cm) ~1 g per 10×10 cm
    Expected Yield Approximately 80–150 g fresh weight per 25×50 cm tray, depending on harvest stage and conditions
    Soaking No soaking required; seeds are mucilaginous and self-hydrate from a moist medium
    Blackout Days 4–5 days total (including germination phase of 3–4 days under cover)
    Watering, pH & Temp Bottom water preferred after germination; pH 5.5–6.5; germination temperature 20–24°C, growing temperature 18–22°C; avoid overwatering
    Sprouting Time 3–4 days
    Harvest Time 7–12 days from sowing; harvest at cotyledon stage or when first true leaves begin to emerge, at approximately 5 cm height

    Health & Nutrition

    Vitamins Vitamins A, B-complex (B1, B2, B3, B5, B6), C, D, E, and K (over 100% RDI per serving in mature watercress; concentrated in microgreen form)
    Minerals Calcium, magnesium, potassium, phosphorus, iron, manganese, copper, iodine, zinc
    Notable Compounds Glucosinolates, isothiocyanates (notably benzyl isothiocyanate), carotenoids (beta-carotene, lutein, zeaxanthin), polyphenols, anthocyanins, dietary nitrates, rutin, folic acid
    Health Benefits High antioxidant activity (outperforms many cruciferous vegetables in phenol content and free-radical neutralisation); supports bone health via calcium, magnesium, vitamin K; immune and skin support via vitamins A and C; liver enhanced exercise performance via dietary nitrates; low calorie and hydrating (approx. 89% water content)
    ABOUT

    Watercress (Nasturtium officinale) is one of the most ancient cultivated greens on earth, and as a microgreen it delivers its signature sharp, peppery bite in a form far more tender and easy to grow than the full-size plant. The tiny round leaves emerge glossy and vibrantly emerald-green, with a clean, fresh aroma that hints at mustard and garden cress — snip a stem and you'll catch a lively, almost spicy fragrance instantly. As a microgreen it shines scattered over a soft-boiled egg or folded into a classic British egg sandwich, where its heat plays beautifully against creamy, rich elements. Watercress microgreens also offer enhanced antioxidant levels compared to mature watercress, making this an exceptionally rewarding crop to grow right now.

    GROWING INSTRUCTIONS
    1 Prepare your tray: Fill a tray with drainage holes with 3–4 cm of pre-moistened coconut coir or seed-starting mix — it should feel like a wrung-out sponge. Watercress loves consistent moisture, so getting the base hydration right sets you up for success from the very first day.
    2 Sow your seeds: No soaking needed — watercress seeds are mucilaginous and will draw moisture from the medium on their own. Scatter seeds evenly across the surface, aiming for good coverage without heavy piling. You'll notice them developing a tiny jelly-like gel coat almost immediately — that's perfectly normal and a sign things are working.
    3 Cover and germinate: Place a second tray on top as a blackout cover and keep in a warm spot (around 20–24°C is ideal). Check the tray daily and mist very lightly only if the surface looks dry — watercress seeds prefer less water than most microgreens at this stage, and overwatering is the main pitfall. After 3–4 days you'll see tiny white sprouts pushing upward.
    4 Blackout phase: Once germinated, keep the cover on for a total blackout period of 4–5 days. Lift the cover gently each day — you'll be rewarded by the sight of pale, stretching stems reaching for imaginary light. This etiolation phase builds strong stems and uniform height before the real magic begins.
    5 Expose to light: Remove the blackout cover and move your tray to a bright windowsill or under grow lights (12–16 hours per day). Within hours you'll watch the pale seedlings transform into vivid, glossy emerald green as chlorophyll floods the leaves — one of the most satisfying moments in microgreens growing.
    6 Water carefully: Switch to bottom watering by adding water to a second tray placed beneath your growing tray. Keep the medium moist but never waterlogged. Good airflow around your tray is important — watercress is prone to damping off if conditions are stagnant and wet.
    7 Harvest: At 7–12 days (or when seedlings reach about 5 cm), use clean scissors to cut just above the growing medium. Harvest when the greens are dry for the best shelf life — and taste one straight from the tray. That sharp, peppery hit is your reward for a job beautifully done.

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