When to plant swiss chard in Adelaide
Swiss chard is cold-hardy, so every date keys off Adelaide's frost dates of Aug 15.
Step 1 · Sow
Start seeds indoors
Jul 18 – Aug 8
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Aug 1 – Aug 22
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Sep 20 – Sep 30
Picking runs until conditions turn against the crop.
Window
Days to maturity
50 – 60 d
Adelaide's 304-day season leaves this much room.
Swiss chard on Adelaide's growing year
Frost-bounded season with crops mapped onto the 12-month axis.
Frost risk Growing Harvest
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
FROST
AUG 15
JUN 15
Common questions
When can I sow swiss chard outdoors in Adelaide?
Direct-sow around early August (Aug 1–Aug 22) in Adelaide, based on its local frost dates. Confidence 80%.
When will swiss chard be ready to harvest in Adelaide?
Expect to harvest from around mid September (Sep 20–Sep 30) in Adelaide, based on its local frost dates. Confidence 72%.
When should I start swiss chard seeds indoors in Adelaide?
Start seeds indoors around mid July (Jul 18–Aug 8) in Adelaide, based on its local frost dates. Confidence 76%.
When can I transplant swiss chard outdoors in Adelaide?
Transplant outdoors around early August (Aug 1–Aug 22) in Adelaide, based on its local frost dates. Confidence 80%.
How long is the growing season in Adelaide?
Adelaide has roughly 304 frost-free days, which is enough time to grow swiss chard to maturity outdoors.
The rule of thumb
Sow swiss chard as soon as the soil is workable — it tolerates cool weather and light frost. Every date on this page is derived from that rule and Adelaide's frost dates.
Confidence 80/100 · NOAA GHCN-Daily · 1991–2020 normals · frost dates are probabilities, not guarantees.