When to plant cucumber in Sydney
Cucumber is frost-tender, so every date keys off Sydney's last spring frost of Jul 25.
Step 1 · Sow
Start seeds indoors
Jul 4 – Jul 25
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 – Oct 10
Picking runs until conditions turn against the crop.
Window
Days to maturity
50 – 70 d
Sydney's 345-day season leaves this much room.
Cucumber 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 can I sow cucumber outdoors in Sydney?
Direct-sow around early August (Aug 1–Aug 22) in Sydney, based on its local frost dates. Confidence 84%.
When will cucumber be ready to harvest in Sydney?
Expect to harvest from around mid September (Sep 20–Oct 10) in Sydney, based on its local frost dates. Confidence 76%.
When should I start cucumber seeds indoors in Sydney?
Start seeds indoors around early July (Jul 4–Jul 25) in Sydney, based on its local frost dates. Confidence 80%.
When can I transplant cucumber outdoors in Sydney?
Transplant outdoors around early August (Aug 1–Aug 22) 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 cucumber to maturity outdoors.
The rule of thumb
Sow cucumber 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 Sydney's frost dates.
Confidence 84/100 · NOAA GHCN-Daily · 1991–2020 normals · frost dates are probabilities, not guarantees.