When to plant radish in Edinburgh
Radish is cold-hardy, so every date keys off Edinburgh's frost dates of Apr 18.
Step 1 · Sow
Direct sow outdoors
Mar 21 – Apr 11
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Apr 15 – Apr 20
Picking runs until conditions turn against the crop.
Step 3 · Second sowing
Autumn / second sowing
Sep 9 – Sep 23
A second window for a fall crop, timed to mature before the first frost.
Step 4 · Second harvest
Autumn crop harvest
Oct 11 – Oct 16
Maturity window for the second sowing.
Window
Days to maturity
25 – 30 d
Edinburgh's 201-day season leaves this much room.
Radish on Edinburgh'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 18
OCT 30
Common questions
When can I sow radish outdoors in Edinburgh?
Direct-sow around late March (Mar 21–Apr 11) in Edinburgh, based on its local frost dates. Confidence 89%.
When will radish be ready to harvest in Edinburgh?
Expect to harvest from around mid April (Apr 15–Apr 20) in Edinburgh, based on its local frost dates. Confidence 80%.
Can I plant radish in autumn in Edinburgh?
Yes — Edinburgh supports a second, autumn sowing of radish around early September (Sep 9–Sep 23), timed to mature before the first fall frost.
How long is the growing season in Edinburgh?
Edinburgh has roughly 201 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 Edinburgh's frost dates.
Confidence 89/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.