When to plant broccoli in Manchester

Broccoli is cold-hardy, so every date keys off Manchester's frost dates of May 2.
Step 1 · Sow
Start seeds indoors
Mar 21 – Apr 11
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Apr 18 – May 9
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jun 17 – Jul 12
Picking runs until conditions turn against the crop.
Step 4 · Second sowing
Autumn / second sowing
Jun 28 – Jul 12
A second window for a fall crop, timed to mature before the first frost.
Step 5 · Second harvest
Autumn crop harvest
Sep 3 – Sep 28
Maturity window for the second sowing.
Window
Days to maturity
60 – 85 d
Manchester's 161-day season leaves this much room.
Broccoli on Manchester'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
MAY 2
OCT 12

Common questions

When will broccoli be ready to harvest in Manchester?

Expect to harvest from around mid June (Jun 17–Jul 12) in Manchester, based on its local frost dates. Confidence 78%.

When should I start broccoli seeds indoors in Manchester?

Start seeds indoors around late March (Mar 21–Apr 11) in Manchester, based on its local frost dates. Confidence 83%.

When can I transplant broccoli outdoors in Manchester?

Transplant outdoors around mid April (Apr 18–May 9) in Manchester, based on its local frost dates. Confidence 87%.

Can I plant broccoli in autumn in Manchester?

Yes — Manchester supports a second, autumn sowing of broccoli around late June (Jun 28–Jul 12), timed to mature before the first fall frost.

How long is the growing season in Manchester?

Manchester has roughly 161 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 Manchester's frost dates.

Confidence 87/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.