Helianthus — 9 species
Botanical species in the genus Helianthus recorded in the PlantPeers database.
Helianthus annuus
Helianthus annuus
Family: Asteraceae
Cultivation
Helianthus annuus is cultivated from the temperate zone through to the tropics, though most commonly in the subtropics and warm temperate zones. They can be grown at elevations up to 2,600 metres in the tropics, but are generally better below 1,500 metres and do not thrive in humid areas. They grow best in areas where annual daytime temperatures are within the range 17 - 34°c, but can tolerate 5 - 45°c.
Full cultivation guide →
Helianthus giganteus
Helianthus giganteus
Family: Asteraceae
Cultivation
Succeeds in most soils in a sunny position. Requires a rich soil. Dislikes shade.
Full cultivation guide →Helianthus maximiliani
Helianthus maximiliani
Family: Asteraceae
Cultivation
Succeeds in most soils in a sunny position. Requires a rich soil. Dislikes shade.
Full cultivation guide →Helianthus petiolaris
Helianthus petiolaris
Family: Asteraceae
Cultivation
Succeeds in most soils in a sunny position. Requires a rich soil. Dislikes shade.
Full cultivation guide →Helianthus strumosus
Helianthus strumosus
Family: Asteraceae
Cultivation
Succeeds in most soils in a sunny position. Requires a rich soil. Dislikes shade.
Full cultivation guide →Helianthus tuberosus
Helianthus tuberosus
Family: Asteraceae
Cultivation
Jerusalem artichoke is reported to tolerate an annual precipitation of 31 to 282cm, an average annual temperature of 6.3 to 26.6°C and a pH in the range of 4.5 to 8.2. A very easily grown plant, it grows best in a loose circumneutral loam but succeeds in most soils and conditions in a sunny position. Plants are more productive when grown in a rich soil.
Full cultivation guide →Helianthus × doronicoides
Helianthus × doronicoides
Family: Asteraceae
Cultivation
Succeeds in most soils in a sunny position. Requires a rich soil. Dislikes shade.
Full cultivation guide →Helianthus × laetiflorus
Helianthus × laetiflorus
Family: Asteraceae
Cultivation
Succeeds in most soils in a sunny position. Requires a rich soil. Dislikes shade.
Full cultivation guide →