When to plant cauliflower in Manchester

Cauliflower 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 24 – May 15
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jun 23 – Jul 18
Picking runs until conditions turn against the crop.
Step 4 · Second sowing
Autumn / second sowing
Jun 6 – Jun 20
A second window for a fall crop, timed to mature before the first frost.
Step 5 · Second harvest
Autumn crop harvest
Aug 12 – Sep 6
Maturity window for the second sowing.
Window
Days to maturity
60 – 85 d
Manchester's 161-day season leaves this much room.
Cauliflower 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 cauliflower be ready to harvest in Manchester?

Expect to harvest from around late June (Jun 23–Jul 18) in Manchester, based on its local frost dates. Confidence 78%.

When should I start cauliflower 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 cauliflower outdoors in Manchester?

Transplant outdoors around late April (Apr 24–May 15) in Manchester, based on its local frost dates. Confidence 84%.

Can I plant cauliflower in autumn in Manchester?

Yes — Manchester supports a second, autumn sowing of cauliflower around early June (Jun 6–Jun 20), 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 cauliflower to maturity outdoors.

The rule of thumb

Sow cauliflower 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.