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Helianthus annuus 'Taiyo'

Family Name: Asteraceae (Compositae)
Full Sun Moderate Water Ornamental Flowers Annual Herbaceous Plant


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) Annual
Maximum Height 1 m to 1.5 m

Description and Ethnobotany

Growth Form Annual herb up to 1.5 m tall with a straight, non-branching form.
Flowers Compound head is about 20-25 cm wide and composed of golden, petal-like ray florets and dark brown disk florets. The dark centre forms a bulls-eye pattern, because the outer ring of disk florets is a different colour from the ones in the very middle. 
Fruits Indehiscent, dry fruits are technically classified as achenes, but commonly known as sunflower seeds. The dry, fruit wall is grey with black stripes of varying width. The kernel is edible.
Ethnobotanical Uses Edible Plant Parts (Edible Seeds)
Cut - Dried Flower ( This cultivar is often used in floral arrangements.)

Landscaping Features

Desirable Plant Features Ornamental Flowers
Plant & Rootzone Preference - Tolerance Well-Drained Soils
Landscape Uses Hedge / Screening
Thematic Landscaping Golden Garden

Plant Care and Propagation

Light Preference Full Sun
Water Preference Moderate Water
Propagation Method Seed


Mature Foliage Colour(s) Green
Mature Foliage Texture(s) Smooth
Foliar Type Simple / Unifoliate
Foliar Arrangement Along Stem Alternate
Foliar Attachment to Stem Petiolate
Foliar Shape(s) Non-Palm Foliage (Ovate)
Foliar Venation Pinnate / Net

Floral (Angiosperm)

Flower & Plant Sexuality 1 Bisexual Flowers
Flower Colour(s) Black, Yellow / Golden
Flower Grouping Solitary
Flower Location Terminal
Inflorescence Type Compound Head / Capitulum

Image Repository



Master ID 32305
Species ID 6713
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.