When to plant radish in Modesto
Radish is cold-hardy, so every date keys off Modesto's frost dates of Jan 27.
Step 1 · Sow
Direct sow outdoors
Dec 30 – Jan 20
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Jan 24 – Jan 29
Picking runs until conditions turn against the crop.
Step 3 · Second sowing
Autumn / second sowing
Oct 13 – Oct 27
A second window for a fall crop, timed to mature before the first frost.
Step 4 · Second harvest
Autumn crop harvest
Nov 14 – Nov 19
Maturity window for the second sowing.
Window
Days to maturity
25 – 30 d
Modesto's 310-day season leaves this much room.
Radish on Modesto'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
JAN 27
DEC 3
Common questions
When can I sow radish outdoors in Modesto?
Direct-sow around late December (Dec 30–Jan 20) in Modesto, based on its local frost dates. Confidence 87%.
When will radish be ready to harvest in Modesto?
Expect to harvest from around late January (Jan 24–Jan 29) in Modesto, based on its local frost dates. Confidence 78%.
Can I plant radish in autumn in Modesto?
Yes — Modesto supports a second, autumn sowing of radish around mid October (Oct 13–Oct 27), timed to mature before the first fall frost.
How long is the growing season in Modesto?
Modesto has roughly 310 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 Modesto's frost dates.
Confidence 87/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.