When to plant radish in Salt Lake City
Radish is cold-hardy, so every date keys off Salt Lake City's frost dates of Apr 13.
Step 1 · Sow
Direct sow outdoors
Mar 16 – Apr 6
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Apr 10 – Apr 15
Picking runs until conditions turn against the crop.
Step 3 · Second sowing
Autumn / second sowing
Sep 5 – Sep 19
A second window for a fall crop, timed to mature before the first frost.
Step 4 · Second harvest
Autumn crop harvest
Oct 7 – Oct 12
Maturity window for the second sowing.
Window
Days to maturity
25 – 30 d
Salt Lake City's 194-day season leaves this much room.
Radish on Salt Lake City'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 13
OCT 26
Common questions
When can I sow radish outdoors in Salt Lake City?
Direct-sow around mid March (Mar 16–Apr 6) in Salt Lake City, based on its local frost dates. Confidence 89%.
When will radish be ready to harvest in Salt Lake City?
Expect to harvest from around early April (Apr 10–Apr 15) in Salt Lake City, based on its local frost dates. Confidence 80%.
Can I plant radish in autumn in Salt Lake City?
Yes — Salt Lake City supports a second, autumn sowing of radish around early September (Sep 5–Sep 19), timed to mature before the first fall frost.
How long is the growing season in Salt Lake City?
Salt Lake City has roughly 194 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 Salt Lake City's frost dates.
Confidence 89/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.