We Offer Two Premium Varieties

• Type 2 – Australian-Grown Green Sprouting Variety: A robust, reliable seed with a tested 96% germination rate.
• Type 1 – New Zealand-Grown Calabrese Seeds: A sought-after variety with a high 95% germination rate, known for excellent performance.

Broccoli Microgreen Seed Specs

• Family: Brassicaceae
• Scientific Name: Brassica oleracea var. italica
• Seeds per Gram: ~200
• Origin: Australia & New Zealand
• Uses: Microgreens, sprouting, culinary, full maturity
• Status: Non-GMO, untreated
• Germination Rate: 95–96%
• Germination Time: 3–7 days
• Days to Harvest: 6–12 days (microgreens)
• Germination Temperature: 8–30 °C

1. Preparation

• Choose a shallow tray with drainage holes (20 cm × 20 cm works well).
• Fill with 3–4 cm of quality seed-raising mix, coir, or fine compost.
• Lightly press the surface to make a level seed bed.
• Moisten the medium so it’s damp but not waterlogged.

2. Seeding

• No pre-soaking is required for broccoli.
• Spread seeds evenly across the surface at about 8–10 g per 20 cm tray.
• Mist the seeds gently, then cover with a lid/tray or propagation dome.

3. Germination

• Keep trays out of the sun for the first 3 days.
• From days four and on, place your trays in a well lite sunny position otherwise they will grow tall and scrappy. If placed in too sunny a position, they will burn and wilt.
• Maintain temperatures between 16–26 °C for best results.

4. Light & Growth

• Once sprouts emerge, uncover the tray and move it to a bright, indirect light source or under grow lights.
• Ensure steady airflow to avoid fungal issues.
• Mist 1–2 times daily or bottom-water as needed, keeping the soil moist but never soggy.

5. Harvesting

• Broccoli microgreens are ready in 6–12 days when seedlings reach 5–7 cm tall with bright green leaves.
• Harvest in the morning for best crispness by snipping just above soil level with clean scissors.
• Use immediately, or store in a sealed container in the fridge for up to 7 days.

Common Problems & Solutions

• Scrapy tall pale stems → Not enough light; move to stronger lighting or use a grow lamp.
• Mould or Rott/damping-off → Improve airflow, avoid overwatering and allow tray to almost dry before watering again. Make sure to sterilise equipment in-between cycles.
• Bitter taste → Harvest on time or a little bit early. Crops tend to lose sweetness as they get older.

Growing Tip

Broccoli microgreens pair well with Green Daikon Radish and Purple Sango Radish. These varieties thrive under the same conditions and are easily grown and harvested together, making them perfect companions in your growing setup.

Light & Colour

Provide strong indirect light or full-spectrum LEDs to encourage compact growth and rich, vibrant colours. The deepest hues are usually achieved only with supplemental lighting.

Temperature

Both excessive cold and excessive heat can affect reliability and consistency in microgreen production. Controlled environments deliver the best results.

Moisture Balance

Keep the growing medium consistently moist but never waterlogged. Overwatering reduces oxygen in the root zone and leads to weak, spindly stems.

Damping Off

A common microgreens issue where seedlings rot and collapse, caused by water moulds thriving in overly wet conditions. To prevent this, avoid overwatering. Once seeds have sprouted, stop misting from above and switch to bottom watering. Always use sterile trays, tools, and fresh growing media for each new crop. In some cases, mould spores may already be present in the water source. Solutions include ozone-treating your water (an organic practice) or using reverse osmosis water. As a last resort (not recommended), a diluted cleaning agent such as chlorine or bleach can be applied with extreme caution.

Reliable Quality Seeds

Strong, healthy microgreens start with top-quality seed. Always buy from trusted suppliers who use proper storage systems such as industrial dehumidifiers, air-conditioning, cold storage, and even carbon dioxide–controlled atmospheres to maintain seed integrity.

Poor handling at the supplier level can lead to seed degradation, lower germination rates, mould issues, or even contamination. In some cases, seeds may be sold as “microgreen” seed without testing or proven history—often substitutes chosen for profit rather than performance. These second-rate seeds can result in weak, inconsistent crops with undesirable traits.

Tip: Store your own seed in a cool, dry, airtight container to preserve reliability for future sowings. Fridge or Freezer: For long-term storage, refrigeration or freezing works well — just let seeds return to room temperature before planting.

Seeds don’t exactly “expire,” but their ability to sprout gradually declines over time. With the right storage, your microgreen seeds will stay viable for years, giving you strong germination and healthy trays every time.

Key Storage Tips

• ✅ Cool, Dry & Dark: Store seeds away from heat, light, and humidity for maximum lifespan.
• ✅ Airtight Containers: Use sealed jars or pouches; add a silica gel packet to guard against moisture.
• ✅ Fridge or Freezer: For long-term storage, refrigeration or freezing works well — just let seeds return to room temperature before planting.

Microgreen Seed Viability Guide

Here’s how long you can expect popular microgreen seed varieties to last under proper storage:

• 1–2 Years: Garlic Chives, Onion, Corn Salad
• 3–4 Years: Radish, Sorrel, Basil
• 4–5 Years: Beets, Broccoli, Cabbage, Mustard, Kale, Mizuna

Quick Germination Test

Not sure about older seeds? Test them first:

1. Place 10 seeds (e.g., broccoli, pea, or sunflower) on a damp paper towel inside a sealed bag.
2. Keep moist at room temperature.
3. Check after 5–10 days to see how many sprouted — that’s your approximate germination rate.