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Purple Basil Microgreen Seeds


Weight: 1g
Price:
Sale price$3.90

Pickup available at Australian Wheatgrass Warehouse

Usually ready in 2-4 days

Purple Basil Seeds – Vibrant, Fragrant & Perfect for Microgreens

Looking to add a pop of colour and flavour to your dishes? Our Purple Basil Seeds (Dark Opal variety) are a top choice for growing stunning microgreens or full-sized basil plants. These beauties sprout into compact, uniform trays with deep purple leaves and a fragrant basil taste – perfect for garnishing, salads, sauces, and Mediterranean dishes.

  • Consistent Growth: Bred for compact, uniform trays that look as good as they taste.
  • Rich Colour & Flavour: Striking purple leaves with that classic aromatic basil flavour.
  • Versatile: Harvest as microgreens in 15–20 days or grow on into mature basil plants.
  • Premium Quality: Sourced from New Zealand, non-GMO, untreated, ~87% germination.

Perfect for:

  • Home chefs wanting restaurant-quality garnishes
  • Microgreen enthusiasts looking for colourful varieties
  • Gardeners seeking dual-purpose seeds (microgreens or mature herbs)

Explore our other basil stars: Thai, Green Torino, and Greek Basil.

Australian Wheatgrass Quality Promise: All our Purple Basil Seeds are tested for purity and germination, packed fresh in resealable pouches, non-GMO and untreated – guaranteed premium quality at the best price.

  • Family: Lamiaceae
  • Scientific Name: Ocimum basilicum (Dark Opal)
  • Seeds per Gram: ~620
  • Germination Rate: ~87%
  • Germination Time: 5–10 days
  • Germination Temperature: 18–35 °C
  • Harvest: 15–20 days (microgreens) or longer for full plants
  • Flavour: Aromatic, fresh basil taste, similar to mature basil
  • Colour: Striking purple foliage
  • Prepare: Use a shallow tray with 3–4 cm of seed raising mix, compost, or coir. Moisten evenly.
  • Sow: Sprinkle seeds evenly across the surface. No soaking required.
  • Cover: Press lightly and cover with a very thin layer of soil, vermiculite, or use a humidity dome.
  • Germination: Keep evenly moist, covered until sprouting begins (5–10 days).
  • Light: Once sprouted, place under bright indirect light or a grow lamp. Too little light causes legginess.
  • Watering: Mist or bottom-water daily to maintain moisture without waterlogging.
  • Harvest: Snip at 2–6 cm tall (15–20 days). Leaves should be aromatic and deep purple.
  • Storage: Best eaten fresh. Store harvested microgreens in a sealed container in the fridge for up to 2 days.

Common Issues & Tips:

  • Damping Off: Use fresh soil, avoid overwatering, and ensure airflow.
  • Bitter Taste: Caused by slow growth or late harvest – harvest promptly for best flavour.
  • Pests: Protect young seedlings from slugs and snails if growing outdoors.


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.

Live Rates – Weight & Destination Based
Shipping is automatically calculated at checkout based on your order’s weight and delivery address. We use real-time rates from Australia Post and other carriers to provide the most accurate cost.

Handling Time
Orders are packed and dispatched within 0–2 business days (Monday–Friday).

Estimated Delivery Time
Transit times depend on your location:
• Metro areas: usually 2–3 business days
• Regional/rural areas: 5–10 business days
• WA & TAS: may take longer due to state biosecurity inspections

Tracking
All orders include tracking. You’ll receive an email with your tracking link once your parcel has shipped.

Authority to Leave (ATL)
Couriers may leave parcels in a safe place if you are not home. Please provide delivery instructions at checkout if you prefer otherwise.

Pickup Option (Riverstone, NSW)
Please place your order on our website and select “Pick up” at checkout. Wait for us to contact you to confirm and arrange a pickup time. Do not come to our warehouse without an appointment — pickups are strictly by arrangement only. Allow 2–3 business days for preparation; we’ll notify you when your order is ready.

Biosecurity (WA & TAS)
Certain seeds are restricted under state biosecurity laws. Customers are responsible for ensuring products comply with local regulations. Please check with the WA Department of Primary Industries and Regional Development or the Tasmanian Department of Natural Resources and Environment before ordering.

For the full details, see our Shipping Policy.

No Change-of-Mind Returns
We do not accept returns or refunds for change-of-mind purchases.

No Exchanges
We do not accept product exchanges. All sales are final unless covered by Australian Consumer Law.

Your Rights Under Australian Consumer Law
Your ACL rights still apply. You’re entitled to a refund or replacement if your item is faulty, misdescribed, or incorrect. Please contact us within 7 days of delivery with your order number and photos if applicable. Once approved, we will provide a prepaid return label and process a refund or replacement. Refunds are issued to your original payment method within 10 business days.

90-Day Seed Germination Guarantee
If your seeds fail to germinate within 90 days of purchase, we will re-test the batch. If our test confirms poor germination, we will provide a refund or replacement. Seeds must be stored and used according to our instructions; please retain packaging or batch details if available.

For the full policy text you can also see our policy page at /policies/refund-policy.

Estimate shipping

Microgreen Seeds FAQ

Microgreens are young edible plants grown in soil or a growing medium for 7–21 days until the first true leaves appear. Sprouts are eaten after just a few days and don’t require soil or light. Microgreens have a stronger flavour and higher nutrient density than sprouts.

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.

Popular easy growers include broccoli, radish, sunflower, pea shoots, buckwheat and mustard. Always use seeds labelled for sprouting or microgreens — garden seeds may be chemically treated and are not safe to eat at the seedling stage.

Spread seeds evenly in a shallow tray with soil or a growing medium, keep them moist, and provide light (sunlight or grow light). Most varieties are ready to harvest in 7–21 days

It depends on the variety, but as a rule of thumb, a 10x10cm tray uses 5 grams for small seeds (broccoli, mustard) and 25 grams for large seeds (peas, sunflowers).

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