When to plant onion in Perth
Perth sits in Australia's temperate zone. Computed from Perth's Bureau of Meteorology climate averages, here is the onion window:
Sow
June – September
Transplant
—
Harvest
November – February
Temperate zone tip
Sydney and Perth grow intermediate-day onions like Pukekohe and Hunter River Brown. Plant March to July.
Frost matters here: the last frost around Perth typically falls in September, with the first returning around May.
Gardening near Perth?
This calendar uses Perth's average climate. Get the interactive version tuned to your exact suburb — free, no account needed.
Open your calendar →Frequently asked questions
When can I plant onion in Perth?
In Perth (temperate zone), sow seed June – September. Harvest typically runs November – February.
Can you grow onion in Perth?
Yes — onion grows well around Perth when planted in its window. Sydney and Perth grow intermediate-day onions like Pukekohe and Hunter River Brown. Plant March to July.