When to plant cauliflower in Sydney
Cauliflower is cold-hardy, so every date keys off Sydney's frost dates of Jul 25.
Step 1 · Sow
Start seeds indoors
Jun 13 – Jul 4
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Jul 11 – Aug 1
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Sep 9 – Oct 4
Picking runs until conditions turn against the crop.
Window
Days to maturity
60 – 85 d
Sydney's 345-day season leaves this much room.
Cauliflower on Sydney'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
JUL 25
JUL 5
Common questions
When will cauliflower be ready to harvest in Sydney?
Expect to harvest from around early September (Sep 9–Oct 4) in Sydney, based on its local frost dates. Confidence 76%.
When should I start cauliflower seeds indoors in Sydney?
Start seeds indoors around mid June (Jun 13–Jul 4) in Sydney, based on its local frost dates. Confidence 80%.
When can I transplant cauliflower outdoors in Sydney?
Transplant outdoors around mid July (Jul 11–Aug 1) in Sydney, based on its local frost dates. Confidence 84%.
How long is the growing season in Sydney?
Sydney has roughly 345 frost-free days, which is enough time to grow cauliflower to maturity outdoors.
The rule of thumb
Sow cauliflower 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 Sydney's frost dates.
Confidence 84/100 · NOAA GHCN-Daily · 1991–2020 normals · frost dates are probabilities, not guarantees.