When to plant radish in Nagoya
Radish is cold-hardy, so every date keys off Nagoya's frost dates of Apr 1.
Step 1 · Sow
Direct sow outdoors
Mar 4 – Mar 25
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Mar 29 – Apr 3
Picking runs until conditions turn against the crop.
Step 3 · Second sowing
Autumn / second sowing
Oct 19 – Nov 2
A second window for a fall crop, timed to mature before the first frost.
Step 4 · Second harvest
Autumn crop harvest
Nov 20 – Nov 25
Maturity window for the second sowing.
Window
Days to maturity
25 – 30 d
Nagoya's 253-day season leaves this much room.
Radish on Nagoya'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
APR 1
DEC 9
Common questions
When can I sow radish outdoors in Nagoya?
Direct-sow around early March (Mar 4–Mar 25) in Nagoya, based on its local frost dates. Confidence 45%.
When will radish be ready to harvest in Nagoya?
Expect to harvest from around late March (Mar 29–Apr 3) in Nagoya, based on its local frost dates. Confidence 40%.
Can I plant radish in autumn in Nagoya?
Yes — Nagoya supports a second, autumn sowing of radish around mid October (Oct 19–Nov 2), timed to mature before the first fall frost.
How long is the growing season in Nagoya?
Nagoya has roughly 253 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 Nagoya's frost dates.
Confidence 45/100 · Curated · based on NASA POWER (modeled) 1991–2020 · frost dates are probabilities, not guarantees.