When to plant onion in Darwin
Honest answer: onion is a poor fit for Darwin. Onion bolts quickly in your climate due to long day lengths — try short-day varieties or shade cloth in cooler months. If you're set on trying, treat it as an experiment — a sheltered microclimate or pots you can move may stretch the rules.
Tropical zone tip
Use only short-day varieties in Darwin. Long-day onions won't bulb in tropical latitudes.
Darwin is essentially frost-free, which gives onion plenty of flexibility either side of the ideal window.
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Open your calendar →Frequently asked questions
Can you grow onion in Darwin?
Darwin's tropical climate makes onion a poor fit: Onion bolts quickly in your climate due to long day lengths — try short-day varieties or shade cloth in cooler months.