When to plant turnip in Montreal
Turnip is cold-hardy, so every date keys off Montreal's frost dates of Apr 19.
Step 1 · Sow
Direct sow outdoors
Apr 20 – May 11
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
May 30 – Jun 14
Picking runs until conditions turn against the crop.
Step 3 · Second sowing
Autumn / second sowing
Aug 13 – Aug 27
A second window for a fall crop, timed to mature before the first frost.
Step 4 · Second harvest
Autumn crop harvest
Sep 29 – Oct 14
Maturity window for the second sowing.
Window
Days to maturity
40 – 55 d
Montreal's 192-day season leaves this much room.
Turnip on Montreal'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
FROST
FROST
APR 19
OCT 28
Common questions
When can I sow turnip outdoors in Montreal?
Direct-sow around mid April (Apr 20–May 11) in Montreal, based on its local frost dates. Confidence 82%.
When will turnip be ready to harvest in Montreal?
Expect to harvest from around late May (May 30–Jun 14) in Montreal, based on its local frost dates. Confidence 76%.
Can I plant turnip in autumn in Montreal?
Yes — Montreal supports a second, autumn sowing of turnip around mid August (Aug 13–Aug 27), timed to mature before the first fall frost.
How long is the growing season in Montreal?
Montreal has roughly 192 frost-free days, which is enough time to grow turnip to maturity outdoors.
The rule of thumb
Sow turnip 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 Montreal's frost dates.
Confidence 85/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.