when.garden

When to plant summer squash / zucchini in Melbourne

Summer squash / Zucchini is frost-tender, so every date keys off Melbourne's last spring frost of Aug 28.
Step 1 · Sow
Start seeds indoors
Aug 14 – Sep 4
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Sep 4 – Sep 25
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Oct 19 – Nov 3
Picking runs until conditions turn against the crop.
Window
Days to maturity
45 – 60 d
Melbourne's 270-day season leaves this much room.
Summer squash / Zucchini on Melbourne'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
AUG 28
MAY 25

Common questions

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

Direct-sow around early September (Sep 4–Sep 25) in Melbourne, based on its local frost dates. Confidence 86%.

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

Expect to harvest from around mid October (Oct 19–Nov 3) in Melbourne, based on its local frost dates. Confidence 77%.

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

Start seeds indoors around mid August (Aug 14–Sep 4) in Melbourne, based on its local frost dates. Confidence 82%.

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

Transplant outdoors around early September (Sep 4–Sep 25) in Melbourne, based on its local frost dates. Confidence 86%.

How long is the growing season in Melbourne?

Melbourne has roughly 270 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 Melbourne's frost dates.

Confidence 86/100 · NOAA GHCN-Daily · 1991–2020 normals · frost dates are probabilities, not guarantees.
Summer squash / Zucchini in other places
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