When to plant cauliflower in Billings
Cauliflower is cold-hardy, so every date keys off Billings's frost dates of May 8.
Step 1 · Sow
Start seeds indoors
Mar 27 – Apr 17
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.
Window
Days to maturity
60 – 85 d
Billings's 150-day season leaves this much room.
Cauliflower 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 will cauliflower be ready to harvest in Billings?
Expect to harvest from around late June (Jun 23–Jul 18) in Billings, based on its local frost dates. Confidence 81%.
When should I start cauliflower seeds indoors in Billings?
Start seeds indoors around late March (Mar 27–Apr 17) in Billings, based on its local frost dates. Confidence 86%.
When can I transplant cauliflower outdoors in Billings?
Transplant outdoors around late April (Apr 24–May 15) in Billings, based on its local frost dates. Confidence 90%.
How long is the growing season in Billings?
Billings has roughly 150 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 Billings's frost dates.
Confidence 90/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.