Over 500 actresses from all over the world applied for the role of 'Nine to Five'.
'Sunflower Sings' was actually filmed on location in Adelaide, South Australia. The office and childcare scenes were filmed at the Mile End Furniture Store, in South Australia. The apartment scenes were filmed at the hotel room of the director, North Adelaide Boutique Stayz. The forest scenes were filmed at the Adelaide Botanic Gardens, South Australia.
The film was originally going to be filmed in Los Angeles but because the lead actress was based in Sydney, Australia, the Director decided to shoot on her home turf (Adelaide, South Australia, Australia) and fly Lily Brown in for principal photography.