When to plant sweet corn in Adelaide
Sweet corn is frost-tender, so every date keys off Adelaide's last spring frost.
Step 1 · Sow
Direct sow outdoors
Oct 3 – Oct 24
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Dec 2 – Jan 11
Picking runs until conditions turn against the crop.
Window
Days to maturity
60 – 100 d
From sowing to first pick.
Common questions
When can I sow sweet corn outdoors in Adelaide?
Direct-sow around early October (Oct 3–Oct 24) in Adelaide, based on its local frost dates. Confidence 82%.
When will sweet corn be ready to harvest in Adelaide?
Expect to harvest from around early December (Dec 2–Jan 11) in Adelaide, based on its local frost dates. Confidence 76%.
How long is the growing season in Adelaide?
Adelaide has roughly 365 frost-free days, which is enough time to grow sweet corn to maturity outdoors.
The rule of thumb
Sow sweet corn 6–8 weeks before your last spring frost; plant out 2–3 weeks after it. Every date on this page is derived from that rule and Adelaide's frost dates.
Confidence 85/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.