When to plant radish in Columbus
Radish is cold-hardy, so every date keys off Columbus's frost dates of Mar 6.
Step 1 · Sow
Direct sow outdoors
Feb 6 – Feb 27
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Mar 3 – Mar 8
Picking runs until conditions turn against the crop.
Step 3 · Second sowing
Autumn / second sowing
Oct 2 – Oct 16
A second window for a fall crop, timed to mature before the first frost.
Step 4 · Second harvest
Autumn crop harvest
Nov 3 – Nov 8
Maturity window for the second sowing.
Window
Days to maturity
25 – 30 d
Columbus's 262-day season leaves this much room.
Radish on Columbus'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 6
NOV 22
Common questions
When can I sow radish outdoors in Columbus?
Direct-sow around early February (Feb 6–Feb 27) in Columbus, based on its local frost dates. Confidence 88%.
When will radish be ready to harvest in Columbus?
Expect to harvest from around early March (Mar 3–Mar 8) in Columbus, based on its local frost dates. Confidence 79%.
Can I plant radish in autumn in Columbus?
Yes — Columbus supports a second, autumn sowing of radish around early October (Oct 2–Oct 16), timed to mature before the first fall frost.
How long is the growing season in Columbus?
Columbus has roughly 262 frost-free days, which is enough time to grow radish to maturity outdoors.
The rule of thumb
Sow radish 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 Columbus's frost dates.
Confidence 88/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.