When to plant radish in Saint Paul
Radish is cold-hardy, so every date keys off Saint Paul's frost dates of Apr 22.
Step 1 · Sow
Direct sow outdoors
Apr 6 – Apr 27
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
May 1 – May 6
Picking runs until conditions turn against the crop.
Step 3 · Second sowing
Autumn / second sowing
Aug 22 – Sep 5
A second window for a fall crop, timed to mature before the first frost.
Step 4 · Second harvest
Autumn crop harvest
Sep 23 – Sep 28
Maturity window for the second sowing.
Window
Days to maturity
25 – 30 d
Saint Paul's 174-day season leaves this much room.
Radish on Saint Paul'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
APR 22
OCT 12
Common questions
When can I sow radish outdoors in Saint Paul?
Direct-sow around early April (Apr 6–Apr 27) in Saint Paul, based on its local frost dates. Confidence 81%.
When will radish be ready to harvest in Saint Paul?
Expect to harvest from around early May (May 1–May 6) in Saint Paul, based on its local frost dates. Confidence 76%.
Can I plant radish in autumn in Saint Paul?
Yes — Saint Paul supports a second, autumn sowing of radish around late August (Aug 22–Sep 5), timed to mature before the first fall frost.
How long is the growing season in Saint Paul?
Saint Paul has roughly 174 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 Saint Paul's frost dates.
Confidence 84/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.