BASIL ‘Siam Queen’ Herb Seeds
Botanical Name: Ocimum basilicum var. thyrsiflora
- Authentic Thai basil variety known for its sweet anise-clove flavour and rich aroma.
- Perfect herb for Thai curries, stir-fries, noodle dishes, and aromatic garnishes.
- Highly decorative with glossy green leaves and striking purple stems.
- Vigorous and productive, ideal for warm-season herb gardens or patio pots.
- Easy to grow from seed with minimal effort—great for home chefs and beginners alike.
- Thrives in full sun and well-drained soil with regular harvesting.
Plant Details
- Plant Type: Warm season annual herb; frost sensitive
- Plant Height: Up to 60 cm
Sowing Information
- Germination: 7–14 days
- Depth: Surface sow; gently press seeds into moist soil without covering
- Position: Full sun; partial shade in hot climates
- Sow Where: Sow directly into garden beds or pots, or start in trays and transplant when seedlings are strong
- Soil Type: Free-draining, fertile soil enriched with compost or organic matter; pH 6.0–7.5
- Spacing: 30–45 cm between plants to allow airflow and prevent mildew
Growing Tips
- Water consistently to keep soil evenly moist, especially during hot weather.
- Pinch out flower buds early to encourage lush, leafy growth.
- Mulch around the base of plants to retain moisture and reduce weeds.
- Feed with a diluted liquid fertiliser every 3–4 weeks for maximum leaf production.
- Harvest regularly to keep plants compact, vigorous, and full of flavour.
- In cooler areas, grow in pots that can be brought indoors to extend the harvest.
Harvest
Start harvesting fresh leaves around 80 days after sowing. Regularly picking stems and young shoots encourages branching and ongoing production.
How to Grow Siam Queen Basil as Microgreens
Growing Siam Queen Basil as microgreens is a great way to enjoy concentrated flavour and vibrant colour in a compact space.
- No need to pre-soak the seeds before planting.
- Use 28 g of seed for a standard 10 x 20″ microgreen tray.
- Fill the tray with 3–4 cm of moist potting mix or coco coir.
- Scatter seeds evenly and mist with water to ensure contact with soil.
- Cover with a tray lid or blackout dome and keep in the dark for 4–6 days.
- After germination, move to bright indirect light or a sunny windowsill.
- Mist daily and keep the growing medium consistently damp.
Harvest (Microgreens): Ready in approximately 18–30 days. Use clean scissors or a sharp knife to cut 1–2 cm above the soil line.
When to Sow Siam Queen Basil in Your Climate
| Climate Zone | Best Planting Time | Tips |
|---|---|---|
| Temperate | Spring to early summer | Sow after last frost when soil warms. Ideal for garden beds and windowsill pots. |
| Subtropical | Spring to early summer | Sow once night temps are above 15°C. Use mulch and regular watering for lush growth. |
| Tropical | Autumn to early spring | Avoid wet season. Grow in raised beds or containers for better drainage and airflow. |
| Cool | Late spring to early summer | Start seeds indoors from late winter and transplant after danger of frost has passed. |
| Arid | Early spring and late summer | Sow in mild weather. Provide light afternoon shade and consistent moisture for best results. |
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