Onion Microgreens Seeds

🧅 Mild onion flavour💧 No soaking🌱 Harvest with roots 🧅FlavourMild & sweet onion ✂️Harvest9–11 days 💡DifficultyEasy Onion microgreens give you the taste of fresh spring onion in just 9–11 days — no chopping board, no tears. Grown from Allium cepa seeds, the slender, grass-like shoots are milder and sweeter than a bulb and finish eggs, potatoes and salads in seconds. DescriptionHow to GrowBenefitsCulinary UsesFAQ Spring Onion Flavour in Under Two Weeks Onion microgreens are the young shoots of the common onion, Allium cepa — the same plant that gives us bulbs, harvested long before any bulb forms. They grow as a dense carpet of thin, upright green threads, many of them still wearing the tiny black seed coat on top. The flavour is unmistakably onion, yet softer and sweeter than a raw bulb, somewhere between chives and a young spring onion. For an allium they are quick: 5–6 days to germinate and only 4–5 more in the light, so the whole cycle takes 9–11 days. Seeds are sown dry, without soaking, and generously — 12 g per 11×18 cm container — because the fine shoots stand best shoulder to shoulder. A light weight during germination keeps the stand even. Their best trick is the root. Grown on a linen mat or fabric, onion microgreens form a clean, white root pad that lifts out in one piece. Harvested with roots, the greens keep fresh longer than cut herbs — handy for home meal prep, and a favourite format of small growers who sell at markets or to restaurants. 🧅FlavourMild onion, sweet finish 🌿Plant familyAmaryllidaceae (onion family) 💧SoakingNot needed — sow dry 🧵Growing mediumLinen, fabric, cotton or coco 🌡️Germination5–6 days at 20–22 °C ✂️Harvest5–7 cm, cut or with roots 📋 Product Specifications Botanical name Allium cepa Common names Onion, bulb onion Plant family Amaryllidaceae (formerly Alliaceae) Soaking Not required Growing medium Linen mat, natural fabric, cotton wool, coco coir Seeding rate 12 g dry seed per 11×18 cm container Weighting Yes — 0.5–1 kg on a stack of containers Germination time 5–6 days at 20–22 °C Growth after germination 4–5 days Total time to harvest 9–11 days Harvest height 5–7 cm Yield (dry seed : cut greens) ≈ 1 : 5 Harvest options Cut with scissors, or pull out with roots (best on fabric) 12 gSeed per 11×18 cm boxSown dry 5–6Days to germinateAt 20–22 °C 4–5Days of growthAfter germination 1 : 5Seed-to-greens yield≈ 60 g per box How to Grow Onion Microgreens Onion is easy to grow once you respect its character: sow thickly, keep it under weight while it germinates and choose fabric if you want to harvest with roots. From sowing to plate takes less than two weeks. 🌡️Temperature20–22 °CFor germination ⚖️Seed rate12 gPer 11×18 cm box 🏋️Weight0.5–1 kgOn a stack of boxes 🌱Germination5–6 daysDark, under weight ☀️Growth4–5 daysIn bright light ✂️Harvest height5–7 cmCut or pull with roots Step-by-Step Growing Guide 1 Prepare the mat Line an 11×18 cm container (a berry punnet works perfectly) with a linen mat or a piece of natural fabric. Cotton wool and coco coir work too, but fabric is the one to choose if you want to harvest with roots. Moisten evenly and pour off the excess. 2 Sow thickly and dry Spread 12 g of dry seed over the surface in an even layer — the seeds may touch. Onion shoots are thin, and a dense sowing gives a full, upright carpet. 3 Mist the seeds Spray with a fine mist so every seed sits in contact with the wet mat. Don’t cover the seeds. 4 Stack and weigh down Stack the containers, cover the top one with an empty box or lid and set a 0.5–1 kg weight on it. The pressure keeps the seeds against the mat and helps the roots grip the fabric. 5 Dark and warm for 5–6 days Keep the stack in a dark place at 20–22 °C. Check once a day that the mat stays moist and air the stack briefly. 6 Into the light When the shoots start lifting the weight, remove it, unstack and move the containers to bright light — a sunny windowsill or 12–16 hours a day under a grow lamp. 7 Water from below Add water under the mat rather than over the shoots. The fine stems stay upright and dry, which keeps them clean and helps prevent mould. 8 Harvest at 5–7 cm After 4–5 days in the light, cut just above the mat — or lift the whole root pad off the fabric and pull the greens out with their roots. 💡 Grower’s trick: harvest with rootsGrown on linen or fabric, onion microgreens can be pulled out with their roots instead of being cut. The roots stay white and free of substrate, the greens keep fresh longer, and a bundle looks great at a market stall or on a restaurant pass. Simply trim the roots just before serving. What the Onion Family Brings to Your Plate Onions belong to the Allium genus, a group known for its sulfur compounds — the source of that sharp onion aroma — and for flavonoids such as quercetin, for which onions are well known in nutrition research. Microgreens deliver the familiar flavour in a gentler, fresher form, straight from the tray. 🧅Onion Flavour, No Tears There is no bulb to chop — you just snip the greens. All the flavour, without watery eyes or onion-scented hands. 🧪Sulfur Compounds When onion cells are cut, sulfur-containing compounds are released. They create the typical onion bite and are one of the most studied features of the allium family. 🍃A Flavonoid Source Onions are among the best-known dietary sources of quercetin, a plant flavonoid researched for its antioxidant properties. 🧂Flavour Without Extra Salt A handful of onion greens makes eggs, potatoes and dips taste fuller, so you can go easier on the salt. ❄️Fresh Greens All Winter Ready in 9–11 days on a windowsill, onion microgreens keep fresh green flavour on the table when the garden is empty. 🌱Live Harvest With Roots Pulled with roots and kept cool, the greens stay fresh for longer than cut herbs — useful for meal prep and for selling. 🧬 What’s Inside the Shoot Aroma compounds Sulfur compounds (thiosulfinates), released when the cells are cut Flavonoids Quercetin and its glycosides — typical of onions Plant family Amaryllidaceae — related to chives, leek and garlic Edible part Green shoots; roots are trimmed before serving Please note: onions — including onion greens — are toxic to dogs and cats, so keep trays and leftovers out of their reach. If onions tend to disagree with your digestion, start with small amounts. This information is not medical advice. How to Use Onion Microgreens Use onion microgreens anywhere you would reach for chives or the green tops of spring onions — raw and at the last moment, so they stay crisp and bright. 🥚 Eggs Scrambled eggs and omelettes, after cooking Devilled eggs and egg salad Avocado toast with a soft-boiled egg 🥔 Potatoes Jacket potatoes with sour cream Potato salad and mash Rösti and potato pancakes 🥗 Salads & Bowls Tomato and cucumber salads Grain and noodle bowls Microgreen mixes that need some bite 🍣 Fish & Asian Dishes Sushi, poke and ramen Smoked mackerel or salmon Stir-fries — scattered on top to serve 🧀 Dips & Spreads Cream cheese and soured cream dips Hummus and tzatziki Herb butter for steak and grilled corn 🥪 Sandwiches & Snacks Cheese toasties Burgers and wraps Crackers with soft cheese 🍽️ Chef’s Tip:Snip onion microgreens with scissors straight over the plate — they keep their crunch and fresh smell. Don’t cook them: heat softens the thin stems in seconds. For a party platter, serve a live bundle with roots on and let guests cut their own. Frequently Asked Questions What do onion microgreens taste like? ▾Clearly onion, but milder and sweeter than a raw bulb — somewhere between chives and a young spring onion. The finish is clean, without lingering sharpness. Do I need to soak onion seeds? ▾No. Sow them dry onto a moist mat. Soaked seeds stick together and are much harder to spread evenly. Isn’t 12 g of seed per container a lot? ▾Onion shoots are very thin, so they need a dense sowing to form a full, upright carpet. 12 g per 11×18 cm container gives about 60 g of greens; for bigger trays, scale the amount to the surface area. Why use a weight during germination? ▾A 0.5–1 kg weight on the stack keeps the seeds pressed to the mat. The roots grip better — especially on fabric — and the shoots come up evenly. Can I harvest onion microgreens with roots? ▾Yes — that is the best way if you grow on linen or fabric. Lift the root pad and pull the greens out; they keep fresh longer and look great for gifting or selling. Trim the roots just before serving. What are the black tips on the shoots? ▾That is the seed coat, a natural feature of onion microgreens. Brush it off with your hand before serving if you prefer a cleaner look. How long from sowing to harvest? ▾5–6 days of germination at 20–22 °C, then 4–5 days of growth in the light: 9–11 days in total. Do you ship across Europe? ▾Yes. Green Chief ships from Belgium across the EU, with standard delivery in 2–5 business days. Seeds are packed to arrive dry and ready to sow.