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Growing Timeline At-a-Glance
Prepare trays & sow
seeds
Stack & weight
(blackout period)
Expose to light
Bottom water
Harvest when ready
| Daikon Radish Microgreens: Key Growing Stats | |
| Seed per 1122 professional tray | 25 grams |
| Seed per Home Professional Tray | 6 grams |
| Seed density per cm² | 0.02 grams |
| Pre-soak needed? | No |
| Stack and weight period | 3-4 days |
| Time to harvest | 7-11 days |
Quick Start Guide
New to growing Daikon Radish microgreens? Here's the simplified process:
- Prepare your trays: Clean your growing containers and fill with moist growing medium (coco coir recommended) up to the rim.
- Sow seeds: Spread seeds evenly across the surface (6g for home trays, 25g for professional trays).
- Stack & cover: Mist gently, then cover with a second tray and add weight. Keep stacked for 3-4 days until germination.
- Expose to light: Once sprouted, remove the weight and top tray, and place in indirect light or under grow lights.
- Water from below: Add water to bottom reservoir tray only when needed. Maintain good airflow and temperature (18-24°C).
- Harvest: Cut just above soil level when 7-11 days old, when they reach 7-10cm tall.
Introduction
Daikon Radish microgreens are one of the fastest-growing, most beginner-friendly varieties available, making them perfect for novice and experienced growers alike. With their crisp texture, mildly spicy flavour, and vibrant green leaves, these microgreens add a fresh, zesty kick to a variety of dishes.
These microgreens offer impressive nutritional benefits, packed with vitamins C, A, and K, plus potassium, calcium, and antioxidants that support immune health and digestion. They're incredibly low-maintenance, needing minimal space and just 7-11 days from seed to harvest.
One of the quickest varieties to cultivate, Daikon Radish microgreens can be harvested as early as day 7, or left to develop their first true leaves for a more substantial crop. Their peppery leaves and crunchy stems make them a favourite among home growers and chefs alike.
Our certified organic seeds are lab-tested for pathogens and packaged in 100% compostable, resealable materials, benefiting both your health and the environment.
Variety Profile
- Latin Name: Raphanus sativus
- Certification: Certified Organic
- Seed Treatment: Untreated and lab-tested for pathogens
- Flavour & Texture: Peppery, zesty, fresh, with a spicy finish
- Growth Rate: Very fast (7-11 days to harvest)
- Difficulty Level: Easy - perfect for beginners
Seed Quality & Sourcing
The success of your microgreen crop begins with high-quality seeds. Here's what to look for:
What Makes Quality Seeds
- High Germination Rate: Look for seeds with at least an 85% germination rate for even growth.
- Pathogen Testing: Lab-tested seeds minimise the risk of contamination and disease.
- Certified Organic: Ensures seeds are grown without synthetic pesticides or fertilisers.
- Suitable Varieties: Choose seeds specifically labelled for microgreen production for best results.
Storage Recommendations
- Store seeds in a cool (10-15°C), dark, and dry place in an airtight container.
- For long-term storage, refrigerate or freeze unopened packets.
- Avoid frequent opening of refrigerated seeds, as condensation can affect viability.
- Most seeds remain viable for 1-2 years when properly stored.
At Grow Sow Greener, our organic Daikon Radish microgreen seeds are lab-tested for pathogens, have exceptional germination rates, and come in compostable, plastic-free packaging to support both your growing success and environmental sustainability.
Equipment & Materials
Essential Materials Checklist
- Growing trays (see system options below)
- Growing medium (coco coir recommended)
- Organic Daikon Radish microgreen seeds
- Spray bottle for misting
- Clean water
- Light source (sunny windowsill or LED grow lights)
- Small fan for air circulation (optional but recommended)
- Sharp scissors or knife for harvesting
Tray Systems
We offer two specialised tray systems to suit different growing scales:
Home Professional Tray Set
Perfect for: Home growers and small-scale production
- Design: Three-tray system that fits easily on windowsills and countertops
- Dimensions: 22cm x 17cm x 6cm
- Key feature: 6cm depth helps maintain consistent moisture, making it nearly "bomb-proof" for part-time growers
- Seeding rate: 6 grams per tray
- Materials: BPA-free recycled food-grade PP; heavy-duty injection moulded
- Weight: 104g per tray
- Growing medium: Use 1 × 10cm coco disc with 400ml water or half a 650g coco brick
- Bottom tray capacity: 1200ml
1122 Professional Tray System
Perfect for: Professional growers and urban vertical farming
- Design: Three-tray system designed for commercial production
- Dimensions: 56cm x 28cm x 3cm (22" x 11" x 1 3⁄8")
- Key feature: Designed for repeated use and integration with automated systems
- Seeding rate: 25 grams per tray
- Materials: BPA-free recycled food-grade PP; heavy-duty injection moulded
- Weight: 350g per tray
- Growing medium: Fills perfectly with coco coir or professional growing media
- Tray capacity: 4 trays per standard shelf (122cm x 45cm)
Growing Media
While various media can be used, we recommend coco coir for its consistency, ease of use, and compact storage. It provides an ideal texture for delicate new roots and ensures reliable growth.
- Coco Coir: Our preferred medium - sustainable, lightweight, and retains moisture well
- Seed Starting Compost: Good alternative, but ensure it's sterile and fine-textured
- Grow Mats: Convenient option, though typically more expensive than coco coir
Important: Always choose low EC coco coir that has been properly cleaned to remove excess salt for optimal plant health.
Lighting Options
- Natural Light: A south-facing windowsill can work well for home growers
- LED Grow Lights: Recommended for consistent results, especially in winter months
- Light Positioning: Keep lights 20-30cm above the microgreens
- Duration: 12-16 hours of light daily for optimal growth
Vertical Growing Setup (For Professional Growers)
Choose sturdy, vertical shelving, such as kitchen wire racks, to ensure easy cleaning, optimal airflow, and even light distribution. Make sure each shelf is perfectly level to prevent uneven watering, which can lead to dry spots or waterlogged areas in your microgreen trays.
- Recommended rack: 122cm wide, 45cm deep shelving units with typically 6 adjustable shelves per rack.
- Shelf capacity: 4 trays per shelf (with 1122 System)
-
Lighting: Recommended: Two Barrina LED grow lights per shelf (or two Arize lynk LED for professional setups). Installation: Space lights evenly to cover all trays.
- Spacing and Positioning: Shelves should be evenly spaced for optimal light and airflow. The distance between the LED lights and the microgreens should be around 20–30cm for optimal light penetration and balanced growth.
- Environmental control: Small oscillating fan, temperature 18-24°C, 50% relative humidity. Position warm climate crops such as Basil higher on the racks and don’t be afraid to utilise a heat mat. Colder loving varieties such as red mustards and Red Kales (napus) should be positioned lover in the racks where the environment will be naturally colder.
Step-by-Step Growing Guide
Step 1: Preparing Your Growing Container
- Clean your trays thoroughly to remove any residues from previous grows.
- Set up your three-tray system: bottom reservoir tray, middle growing tray (with holes), and top cover tray.
- Ensure your growing surface is level to avoid dry or waterlogged sections.
Step 2: Preparing the Growing Medium
- Place your compressed coco coir in a large container - it will expand significantly.
- Add lukewarm water (20-30°C) and allow to soak for 15-30 minutes until fully expanded.
- Break up any clumps and fluff the coir to an even, light texture.
- Optional: Mix in organic trace minerals or seaweed powder for added nutrition.
- Fill the growing tray to the rim with the moistened medium and gently tamp down. It should be damp but not waterlogged.
Step 3: Sowing the Seeds
- Measure your seeds according to your tray size:
- Home Professional Tray: 6g of seeds
- 1122 Professional Tray: 25g of seeds
- Custom containers: aim for 0.02g per cm²
- Distribute seeds evenly across the surface, spacing them about one to two seed lengths apart.
- Gently mist the seeds with a spray bottle to help them settle into the compost.
- Note: Denser seeding increases humidity and may increase mould risk, but can produce more stems and smaller leaves (favoured by some commercial growers due to more weight). Sparser seeding produces larger leaves (often preferred by home growers).
Step 4: Establishing a Humid Environment & Stacking
- Place the growing tray (with seeds and medium) into the bottom reservoir tray. Do not add water to the reservoir yet.
- Place the top reservoir tray directly on top of the seeds, right way up, gently pressing them into the compost.
- Add weight on top of the cover tray (clean canned goods or bricks work well) to encourage strong root development and an even canopy.
- Place in a warm location (18-24°C) away from direct sunlight during this germination period.
- Keep stacked and weighted for 3-4 days until the seedlings begin to lift the top tray.
Important: The seeds draw their moisture from the pre-moistened growing medium during this phase. Do not add water to the bottom reservoir until after germination.
Step 5: Light Exposure & Growth Management
- Once seedlings have lifted the top tray (around day 3-4), remove the weight and cover.
- Place trays in indirect sunlight or under LED grow lights positioned 20-30cm above the greens.
- Now add water to the bottom reservoir tray to provide moisture via capillary action.
- Maintain gentle airflow with a small fan to prevent mould and strengthen stems.
- If growing on a windowsill, rotate the tray daily to prevent leaning.
- Keep temperature between 18-24°C with 50% relative humidity for optimal growth.
Note: The seedlings may appear yellow at first but will quickly green up with exposure to light.
Step 6: Harvesting & Storage
- Daikon Radish microgreens are typically ready to harvest between days 7-11.
- For best flavour and texture, harvest when they reach 7-10cm tall, just as they develop their first true leaves.
- Use clean, sharp scissors or a knife to cut just above the soil level.
- Hold the greens gently with one hand while cutting with the other for a clean harvest.
- Store harvested microgreens in an airtight container in the refrigerator.
- Do not wash until ready to use, as excess moisture can speed spoilage.
- Properly stored, they should remain fresh for 5-7 days.
Advanced Tips & Best Practices
- Optimise Seeding Density: Experiment with different seeding rates to find your preferred balance between stem and leaf growth.
- Bottom Watering Technique: Only add water to the bottom reservoir when needed—overwatering is a common mistake. Look for signs of dryness like slight wilting before adding more water.
- Light Management: For stockier stems, position lights closer (15-20cm); for longer stems, position lights further away (30-40cm).
- Humidity Control: If your growing environment is very dry, you can increase humidity by misting around (not directly on) the trays or using a humidity dome for the first day after removing the weight.
- Pre-Harvest Practices: For best flavour, avoid watering for 12-24 hours before harvest to concentrate the nutritional content.
- Continuous Growing: Start a new tray every 3-4 days for a constant supply of fresh microgreens.
- Seasonal Adjustments: In winter, you may need supplemental heating or to position trays in a warmer location to maintain optimal growing temperatures.
Troubleshooting Common Issues
| Problem | Possible Causes | Solutions |
|---|---|---|
| Mould Growth | Excessive moisture, poor air circulation, high humidity |
|
|
Root Hairs vs. Mould (white fuzz confusion) |
Normal root hairs often mistaken for mould |
|
| Uneven Germination | Poor seed distribution, uneven moisture, low-quality seeds |
|
| Leggy, Weak Growth | Insufficient light, incorrect light positioning, overcrowding |
|
| Yellowing Leaves | Overwatering, nutrient deficiency, or normal after blackout |
|
Preventing Common Issues
- Sanitation: Thoroughly clean and sanitise all equipment between grows to prevent pathogen buildup.
- Air Movement: A small oscillating fan creates movement that strengthens stems and reduces mould risk.
- Consistent Monitoring: Check your trays daily to catch and address any issues before they become serious.
- Temperature Control: Avoid temperature extremes, as they can stress plants and create favourable conditions for pathogens.
Nutritional Profile & Health Benefits
Daikon Radish microgreens are nutritional powerhouses, densely packed with vitamins, minerals, and beneficial compounds:
Key Nutrients
- Vitamins: A, B, B6, C, E, and K
- Minerals: Calcium, iron, magnesium, phosphorus, potassium, and zinc
- Other Compounds: Folic acid, carotenes, pantothenic acid, and dietary fibre
Health Benefits
- Antioxidant Protection: Rich in vitamins A, C, and E, these microgreens help combat oxidative stress, reducing inflammation and supporting overall cellular health.
- Digestive Support: High in fibre, Daikon Radish microgreens promote healthy digestion and improve gut microbiome balance.
- Immune Enhancement: The combination of vitamins B6, C, and zinc strengthens the immune system, aiding in faster recovery and better defence against illnesses.
- Cardiovascular Support: Potassium and antioxidants help regulate blood pressure and reduce inflammation, promoting heart health.
- Detoxification: Compounds in Daikon Radish microgreens support the body's natural detoxification processes, particularly in the liver.
Nutritional Comparison
Research suggests that microgreens can contain up to 40 times more nutrients than their mature counterparts. Daikon Radish microgreens are particularly notable for their concentrated levels of vitamin C and antioxidants compared to fully grown radishes.
Culinary Uses & Recipe Ideas
Flavour Profile & Complementary Ingredients
Daikon Radish microgreens offer a crisp texture with a zesty, peppery flavour that adds a pleasant kick to dishes. Their taste profile is similar to mature radishes but milder and more nuanced.
Pairs well with:
- Citrus fruits (lemon, lime, orange)
- Avocado and creamy textures
- Fish and seafood, especially raw preparations
- Asian flavours (soy, ginger, sesame)
- Mild cheeses
- Eggs and breakfast dishes
Serving Suggestions
- Spicy Sushi Rolls: Add a handful of Daikon Radish microgreens to homemade sushi rolls for a fresh, peppery crunch that pairs beautifully with fish, avocado, and soy sauce.
- Zesty Noodle Stir-Fry: Toss microgreens into a hot noodle stir-fry just before serving to retain their crisp texture and enhance the dish with a mild, spicy bite.
- Crisp Radish Microgreen Slaw: Mix with shredded cabbage, carrots, and a tangy sesame-ginger dressing for a refreshing slaw that works well as a side or taco topping.
- Breakfast Toast: Layer on avocado toast or eggs for a nutritious breakfast with added texture and flavour.
- Sandwich Boost: Use as a flavourful alternative to lettuce in sandwiches and wraps.
- Soup Garnish: Float on top of miso, ramen, or creamy soups just before serving.
Featured Recipe: Miso Glazed Tofu with Daikon Radish Microgreens & Sesame Rice
Description: This dish brings together the bold flavours of miso-glazed tofu, nutty sesame rice, and the crisp, peppery bite of Daikon Radish microgreens. Firm tofu is marinated in a savoury miso, ginger, and garlic glaze before being pan-seared to golden perfection. Served over warm sesame-infused rice and topped with fresh microgreens, this meal strikes a perfect balance between umami depth and refreshing crunch. A final drizzle of soy-lime dressing and a sprinkle of toasted sesame seeds complete the dish, making it a vibrant, nutrient-rich option for a light yet satisfying meal.
Note: Feel free to substitute the tofu with your protein of choice if preferred.
Handling & Preparation Tips
- Rinse microgreens gently only just before using, not before storage.
- Add to hot dishes at the last moment to preserve their texture and nutritional value.
- Use scissors to cut portion sizes directly from the growing tray for maximum freshness.
- Experiment with layering microgreens between ingredients rather than just as a garnish.
Frequently Asked Questions
Q: How long does it take to grow Daikon Radish microgreens in the UK?
A: They are typically ready for harvest between 7-11 days when grown in soil or coco using our tray systems. Growing time may vary slightly depending on temperature and light conditions.
Q: What seeding rate should I use?
A: For the Home Professional Tray Set, use approximately 6g per tray. For the 1122 Tray System, use approximately 25g per tray. For recycled containers, aim for 0.02g per cm².
Q: Which tray system should I choose?
A: It depends on your scale—Home Professional for compact, home use and the 1122 Tray System for professional or urban vertical farming. The Home Professional set is ideal for windowsills and small spaces, while the 1122 system is designed for larger-scale production.
Q: How do I ensure proper moisture without overwatering?
A: Use bottom watering—add water to the bottom reservoir only when needed, and avoid overwatering by monitoring tray weight. Don't water until well after germination has occurred. The growing medium should feel damp but not waterlogged.
Q: What environmental conditions are optimal?
A: Maintain 18-24°C and about 50% relative humidity with proper airflow for optimal growth. These microgreens do well in typical room temperature conditions, making them suitable for home growing.
Q: Do I need special lights to grow microgreens?
A: While a sunny windowsill can work, LED grow lights provide more consistent results, especially during UK winters with limited natural light. They're particularly important for commercial growers seeking consistent yields.
Q: How do I store harvested microgreens?
A: Store unwashed microgreens in an airtight container lined with paper towels in the refrigerator. Wash just before use to maximise shelf life. They typically remain fresh for 5-7 days when properly stored.
Q: Can I reuse the growing medium?
A: We don't recommend reusing the growing medium for microgreens due to the dense root network and potential pathogen buildup. However, used medium makes an excellent addition to garden compost.
TL;DR Summary
Daikon Radish microgreens are one of the easiest and most rewarding varieties to grow, offering a quick harvest, bold flavour, and impressive nutritional benefits. Their crisp texture and peppery bite make them a versatile addition to a wide range of dishes, from salads and sandwiches to stir-fries and sushi.
Whether you're growing for personal use or as part of a larger sustainability effort, these microgreens are a simple yet impactful way to enjoy fresh, homegrown greens year-round. By cultivating your own microgreens, you're not only enhancing your meals but also contributing to a more sustainable and self-sufficient food system.
Next Steps
- Select your organic seeds, tray system and growing media based on your space and needs
- Follow our detailed growing steps for consistent, successful harvests
- Experiment with different culinary uses to enjoy your fresh microgreens
- Try growing other complementary varieties like broccoli or pea shoots
- Share your growing journey and culinary creations with our community
Thank you for following this guide—happy growing, and enjoy the fresh, vibrant flavours of your Daikon Radish microgreens!