When to plant broccoli in Canberra

Broccoli is cold-hardy, so every date keys off Canberra's frost dates of Oct 10.
Step 1 · Sow
Start seeds indoors
Aug 29 – Sep 19
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Sep 26 – Oct 17
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Nov 25 – Dec 20
Picking runs until conditions turn against the crop.
Step 4 · Second sowing
Autumn / second sowing
Jan 12 – Jan 26
A second window for a fall crop, timed to mature before the first frost.
Step 5 · Second harvest
Autumn crop harvest
Mar 20 – Apr 14
Maturity window for the second sowing.
Window
Days to maturity
60 – 85 d
Canberra's 204-day season leaves this much room.
Broccoli 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 10
APR 28

Common questions

When will broccoli be ready to harvest in Canberra?

Expect to harvest from around late November (Nov 25–Dec 20) in Canberra, based on its local frost dates. Confidence 75%.

When should I start broccoli seeds indoors in Canberra?

Start seeds indoors around late August (Aug 29–Sep 19) in Canberra, based on its local frost dates. Confidence 79%.

When can I transplant broccoli outdoors in Canberra?

Transplant outdoors around late September (Sep 26–Oct 17) in Canberra, based on its local frost dates. Confidence 83%.

Can I plant broccoli in autumn in Canberra?

Yes — Canberra supports a second, autumn sowing of broccoli around mid January (Jan 12–Jan 26), timed to mature before the first fall frost.

How long is the growing season in Canberra?

Canberra has roughly 204 frost-free days, which is enough time to grow broccoli to maturity outdoors.

The rule of thumb

Sow broccoli 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 Canberra's frost dates.

Confidence 83/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.