When to plant radish in Baltimore
Radish is cold-hardy, so every date keys off Baltimore's frost dates of Mar 21.
Step 1 · Sow
Direct sow outdoors
Feb 21 – Mar 14
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Mar 18 – Mar 23
Picking runs until conditions turn against the crop.
Step 3 · Second sowing
Autumn / second sowing
Oct 7 – Oct 21
A second window for a fall crop, timed to mature before the first frost.
Step 4 · Second harvest
Autumn crop harvest
Nov 8 – Nov 13
Maturity window for the second sowing.
Window
Days to maturity
25 – 30 d
Baltimore's 249-day season leaves this much room.
Radish on Baltimore'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
MAR 21
NOV 27
Common questions
When can I sow radish outdoors in Baltimore?
Direct-sow around late February (Feb 21–Mar 14) in Baltimore, based on its local frost dates. Confidence 84%.
When will radish be ready to harvest in Baltimore?
Expect to harvest from around mid March (Mar 18–Mar 23) in Baltimore, based on its local frost dates. Confidence 76%.
Can I plant radish in autumn in Baltimore?
Yes — Baltimore supports a second, autumn sowing of radish around early October (Oct 7–Oct 21), timed to mature before the first fall frost.
How long is the growing season in Baltimore?
Baltimore has roughly 249 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 Baltimore's frost dates.
Confidence 84/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.