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Ocimum basilicum 'Siam Queen'

Family Name: Lamiaceae (Labiatae)
Full Sun: 6-8h Semi-Shade Moderate Water Herb & Spice Herbaceous


Family Name
Genus Epithet
Species Epithet
Infraspecific Epithet

Classifications and Characteristics

Plant Division Angiosperms (Flowering Seed Plants) (Dicotyledon)
Plant Growth Form Herbaceous Plant
Lifespan (in Singapore) Semi-Annual / Annual-Like
Mode of Nutrition Autotrophic
Maximum Height 0.5 m to 0.6 m
Maximum Plant Spread / Crown Width 0.3 m

Description and Ethnobotany

Growth Form Annual or short-lived perennial with erect growth habit.
Foliage Leaves are elliptic and elongated, narrowing at the apex to a long tip. Leaf margin is sparsely lined with minute teeth.
Stems The stem is dark purple.
Flowers Pinkish purple, 2-lipped flowers are arranged in dense, round clusters. 
Cultivation Pinch the stem tips and remove flowers to promote leafy growth and longer plant lifespan. However, the flowers are ornamental and attracts bees. 
Ethnobotanical Uses Edible Plant Parts (Edible Leaves)
Food (Herb and Spice : The leaves have a liquorice flavour which is ideal for salads, sauces and Thai cuisine.)

Landscaping Features

Plant & Rootzone Preference - Tolerance Well-Drained Soils, Fertile Loamy Soils
Landscape Uses Container Planting
Thematic Landscaping Fragrant / Aromatherapy Garden, Economic Garden

Fauna, Pollination and Dispersal

Pollination Method(s) Biotic (Fauna) (Insects (Bee))

Plant Care and Propagation

Light Preference Full Sun, Semi-Shade
Water Preference Moderate Water

Floral (Angiosperm)

Flower Colour(s) Pink, Purple
Flower Grouping Cluster / Inflorescence
Flower Location Terminal
Flower Symmetry Bilateral
Individual Flower Shape Tubular, Labiate / Lipped

Fruit, Seed and Spore

Fruit Classification Simple Fruit
Fruit Type 1 Indehiscent Dry Fruit
Fruit Type 2 Nut / Nutlet

Image Repository



Master ID 32217
Species ID 6623
Flora Disclaimer The information in this website has been compiled from reliable sources, such as reference works on medicinal plants. It is not a substitute for medical advice or treatment and NParks does not purport to provide any medical advice. Readers should always consult his/her physician before using or consuming a plant for medicinal purposes.
Species record last updated on: 20 August 2021.