When to plant sunflower in Perth
Perth sits in Australia's temperate zone. Computed from Perth's Bureau of Meteorology climate averages, here is the sunflower window:
Sow
October – April
Transplant
—
Harvest
~3 months after sowing
Temperate zone tip
Sydney sunflowers planted in September produce flowers through summer.
Frost matters here: the last frost around Perth typically falls in September, with the first returning around May. Sunflower is frost-sensitive, so keep it inside that frost-free run.
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Open your calendar →Frequently asked questions
When can I plant sunflower in Perth?
In Perth (temperate zone), sow seed October – April. Expect to harvest roughly 3 months after sowing.
Can you grow sunflower in Perth?
Yes — sunflower grows well around Perth when planted in its window. Sydney sunflowers planted in September produce flowers through summer.