Fine Herbs

Thai Basil 'Siam Queen'

'Siam Queen Thai' basil is an aromatic Thai basil with fragrant foliage, purple stems and decorative flower spikes, perfect for curries, stir-fries and Asian cuisine.

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Hardiness Not hardy
Difficulty level Easy

Discover the plant

Family Lamiaceae

‘Siam Queen Thai’ basil is a fragrant annual herb, known for its typical Thai basil flavor with spicy, anise, and slightly sweet notes. Its dark green foliage, purple stems, and mauve flower spikes also give it great ornamental value in pots, herb planters, urban gardens, and edible flowerbeds. It is an ideal variety for lovers of Asian cuisine, as it retains its aroma well in hot dishes such as stir-fries, curries, soups, marinades, and noodle dishes.

Easy to grow, ‘Siam Queen Thai’ basil prefers a warm, sunny, and wind-protected location, in fertile, light, and well-drained soil. It grows very well in containers on a terrace, balcony, or near the kitchen, where its leaves can be harvested fresh as needed. Regular watering helps maintain tender and flavorful foliage, while avoiding excess water around the roots. To prolong the harvest, it is recommended to pinch the tips of the stems and remove some of the flowers if the main goal is leaf production.

Both aromatic, decorative, and very productive, ‘Siam Queen Thai’ basil is an excellent choice for creating a gourmet garden with more exotic flavors. Its flowers attract pollinators and add a colorful touch to edible arrangements, while its fragrant foliage allows you to cook fresh and flavorful dishes throughout the season. It is an essential variety to enrich a vegetable garden, herb garden, or sunny container with a useful, elegant, and characterful plant.

Basil 'Siam Queen Thai'

Planting guide

From planting to establishment.

Propagation Sowing or cuttings

Soil and care

The right conditions.

Soil pH Slightly acidic to neutral
Hardiness zone Not hardy
Minimum temperature 10°C
Fertilization
Light and regular fertilization when potted; avoid excess nitrogen
Seasonal care
Pinch regularly to promote dense growth; harvest leaves as needed and protect from cold

Container growing

A controlled environment.

Excellent container plant in a well-drained pot
Basil 'Siam Queen Thai'

Bloom and dimensions

The complete profile.

Flower color Purplish-mauve
Foliage color Deep green with purplish stems
Foliage type Persistent in hot climates
Growth rate Rapid growth
Bloom period
Harvest and bloom from summer to autumn
Maximum height 45 to 60 cm (18 to 24 inches)
Maximum width 30 to 45 cm (12 to 18 inches)
Basil 'Siam Queen Thai'

Garden associations

What to plant with it.

Vegetable garden, herbs, balcony, container, Asian cuisine

Its strengths, naturally.

Not recommended for pets
Not recommended for pets

Pets

Butterflies
Plants that attract butterflies

Butterflies

Repellent
Helps repel certain pests

Repellent