Perth Flowers think Sunflowers are gorgeous; they are bright and cheerful and are perfect to brighten someone’s day. Sunflower bouquets from Perth Flowers. Sunflowers are beautiful but they are only available during the Sunflower season. We can deliver same day or next day delivery depending on what suits you. Perth flowers are also available to deliver flowers whenever you like from Monday- Friday, you can pick from AM and PM delivery to be more specific about when you want your flowers to be delivered. Sunflowers from Perth flowers are sure to put anyone in a summery mood, with their beautiful bright colour.