When to plant summer squash / zucchini in Canberra

Summer squash / Zucchini is frost-tender, so every date keys off Canberra's last spring frost of Oct 20.
Step 1 · Sow
Start seeds indoors
Oct 6 – Oct 27
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Oct 27 – Nov 17
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Dec 11 – Dec 26
Picking runs until conditions turn against the crop.
Window
Days to maturity
45 – 60 d
Canberra's 182-day season leaves this much room.
Summer squash / Zucchini on Canberra'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
OCT 20
APR 20

Common questions

When can I sow summer squash / zucchini outdoors in Canberra?

Direct-sow around late October (Oct 27–Nov 17) in Canberra, based on its local frost dates. Confidence 82%.

When will summer squash / zucchini be ready to harvest in Canberra?

Expect to harvest from around mid December (Dec 11–Dec 26) in Canberra, based on its local frost dates. Confidence 74%.

When should I start summer squash / zucchini seeds indoors in Canberra?

Start seeds indoors around early October (Oct 6–Oct 27) in Canberra, based on its local frost dates. Confidence 78%.

When can I transplant summer squash / zucchini outdoors in Canberra?

Transplant outdoors around late October (Oct 27–Nov 17) in Canberra, based on its local frost dates. Confidence 82%.

How long is the growing season in Canberra?

Canberra has roughly 182 frost-free days, which is enough time to grow summer squash / zucchini to maturity outdoors.

The rule of thumb

Sow summer squash / zucchini 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 Canberra's frost dates.

Confidence 82/100 · NOAA GHCN-Daily · 1991–2020 normals · frost dates are probabilities, not guarantees.