When to plant turnip in Billings
Turnip is cold-hardy, so every date keys off Billings's frost dates of May 8.
Step 1 · Sow
Direct sow outdoors
Apr 17 – May 8
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
May 27 – Jun 11
Picking runs until conditions turn against the crop.
Step 3 · Second sowing
Autumn / second sowing
Jul 20 – Aug 3
A second window for a fall crop, timed to mature before the first frost.
Step 4 · Second harvest
Autumn crop harvest
Sep 5 – Sep 20
Maturity window for the second sowing.
Window
Days to maturity
40 – 55 d
Billings's 150-day season leaves this much room.
Turnip on Billings'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
MAY 8
OCT 4
Common questions
When can I sow turnip outdoors in Billings?
Direct-sow around mid April (Apr 17–May 8) in Billings, based on its local frost dates. Confidence 90%.
When will turnip be ready to harvest in Billings?
Expect to harvest from around late May (May 27–Jun 11) in Billings, based on its local frost dates. Confidence 81%.
Can I plant turnip in autumn in Billings?
Yes — Billings supports a second, autumn sowing of turnip around mid July (Jul 20–Aug 3), timed to mature before the first fall frost.
How long is the growing season in Billings?
Billings has roughly 150 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 Billings's frost dates.
Confidence 90/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.