When to plant radish in Spokane
Radish is cold-hardy, so every date keys off Spokane's frost dates of Apr 30.
Step 1 · Sow
Direct sow outdoors
Apr 2 – Apr 23
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Apr 27 – May 2
Picking runs until conditions turn against the crop.
Step 3 · Second sowing
Autumn / second sowing
Aug 19 – Sep 2
A second window for a fall crop, timed to mature before the first frost.
Step 4 · Second harvest
Autumn crop harvest
Sep 20 – Sep 25
Maturity window for the second sowing.
Window
Days to maturity
25 – 30 d
Spokane's 162-day season leaves this much room.
Radish on Spokane'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 30
OCT 9
Common questions
When can I sow radish outdoors in Spokane?
Direct-sow around early April (Apr 2–Apr 23) in Spokane, based on its local frost dates. Confidence 86%.
When will radish be ready to harvest in Spokane?
Expect to harvest from around late April (Apr 27–May 2) in Spokane, based on its local frost dates. Confidence 77%.
Can I plant radish in autumn in Spokane?
Yes — Spokane supports a second, autumn sowing of radish around mid August (Aug 19–Sep 2), timed to mature before the first fall frost.
How long is the growing season in Spokane?
Spokane has roughly 162 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 Spokane's frost dates.
Confidence 86/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.