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Service Notice

The Western Australian Herbarium’s collections management system, WAHerb, and DBCA’s flora taxonomic names application, WACensus, have been set to read-only mode since 1 October 2025. Recent taxonomic changes are not currently being reflected in Florabase, herbarium collections, or the census. The project team is now conducting testing of the migrated data, and a further update will be provided by the end of the financial year (1 July). Please reach out to us if you have any questions or concerns.

The notice period started at 9:45 am on Friday, 12 December 2025 +08:00 and will end at 12:00 pm on Wednesday, 1 July 2026 +08:00.

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Helianthus annuus L.
Sunflower

Reference
Sp.Pl. [Linnaeus] 2:904-905 (1753)
Conservation Code
Not threatened
Naturalised Status
Alien to Western Australia
Name Status
Current

Erect, woody annual, herb, (0.3-)0.6-3 m high. Fl. yellow, Aug to Dec or Jan to Apr. Weed of habitation, roadsides & waste land in dry places.

Amanda Spooner, Descriptive Catalogue, 14 May 1997
Image

Distribution

IBRA Regions
Avon Wheatbelt, Carnarvon, Coolgardie, Esperance Plains, Geraldton Sandplains, Swan Coastal Plain.
IBRA Subregions
Eastern Goldfield, Geraldton Hills, Katanning, Lesueur Sandplain, Perth, Recherche, Wooramel.
IMCRA Regions
Central West Coast, Leeuwin-Naturaliste.
Local Government Areas (LGAs)
Bayswater, Bunbury, Canning, Cockburn, Coolgardie, Dandaragan, Esperance, Fremantle, Greater Geraldton, Kalgoorlie-Boulder, Northampton, Perth, Shark Bay, Toodyay.