When to plant carrot in Columbia
Carrot is cold-hardy, so every date keys off Columbia's frost dates of Mar 11.
Step 1 · Sow
Direct sow outdoors
Feb 18 – Mar 11
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Apr 19 – May 9
Picking runs until conditions turn against the crop.
Step 3 · Second sowing
Autumn / second sowing
Jul 26 – Aug 9
A second window for a fall crop, timed to mature before the first frost.
Step 4 · Second harvest
Autumn crop harvest
Oct 1 – Oct 21
Maturity window for the second sowing.
Window
Days to maturity
60 – 80 d
Columbia's 248-day season leaves this much room.
Carrot on Columbia'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
MAR 11
NOV 17
Common questions
When can I sow carrot outdoors in Columbia?
Direct-sow around mid February (Feb 18–Mar 11) in Columbia, based on its local frost dates. Confidence 88%.
When will carrot be ready to harvest in Columbia?
Expect to harvest from around mid April (Apr 19–May 9) in Columbia, based on its local frost dates. Confidence 79%.
Can I plant carrot in autumn in Columbia?
Yes — Columbia supports a second, autumn sowing of carrot around late July (Jul 26–Aug 9), timed to mature before the first fall frost.
How long is the growing season in Columbia?
Columbia has roughly 248 frost-free days, which is enough time to grow carrot to maturity outdoors.
The rule of thumb
Sow carrot 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 Columbia's frost dates.
Confidence 88/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.