When to plant radish in Rochester
Radish is cold-hardy, so every date keys off Rochester's frost dates of Apr 29.
Step 1 · Sow
Direct sow outdoors
Apr 7 – Apr 28
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
May 2 – May 7
Picking runs until conditions turn against the crop.
Step 3 · Second sowing
Autumn / second sowing
Sep 3 – Sep 17
A second window for a fall crop, timed to mature before the first frost.
Step 4 · Second harvest
Autumn crop harvest
Oct 5 – Oct 10
Maturity window for the second sowing.
Window
Days to maturity
25 – 30 d
Rochester's 173-day season leaves this much room.
Radish on Rochester'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 29
OCT 24
Common questions
When can I sow radish outdoors in Rochester?
Direct-sow around early April (Apr 7–Apr 28) in Rochester, based on its local frost dates. Confidence 86%.
When will radish be ready to harvest in Rochester?
Expect to harvest from around early May (May 2–May 7) in Rochester, based on its local frost dates. Confidence 80%.
Can I plant radish in autumn in Rochester?
Yes — Rochester supports a second, autumn sowing of radish around early September (Sep 3–Sep 17), timed to mature before the first fall frost.
How long is the growing season in Rochester?
Rochester has roughly 173 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 Rochester's frost dates.
Confidence 89/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.