When to plant turnip in San Antonio
Turnip is cold-hardy, so every date keys off San Antonio's frost dates of Feb 21.
Step 1 · Sow
Direct sow outdoors
Jan 31 – Feb 21
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Mar 12 – Mar 27
Picking runs until conditions turn against the crop.
Step 3 · Second sowing
Autumn / second sowing
Sep 14 – Sep 28
A second window for a fall crop, timed to mature before the first frost.
Step 4 · Second harvest
Autumn crop harvest
Oct 31 – Nov 15
Maturity window for the second sowing.
Window
Days to maturity
40 – 55 d
San Antonio's 282-day season leaves this much room.
Turnip on San Antonio'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
FEB 21
NOV 29
Common questions
When can I sow turnip outdoors in San Antonio?
Direct-sow around late January (Jan 31–Feb 21) in San Antonio, based on its local frost dates. Confidence 83%.
When will turnip be ready to harvest in San Antonio?
Expect to harvest from around mid March (Mar 12–Mar 27) in San Antonio, based on its local frost dates. Confidence 75%.
Can I plant turnip in autumn in San Antonio?
Yes — San Antonio supports a second, autumn sowing of turnip around mid September (Sep 14–Sep 28), timed to mature before the first fall frost.
How long is the growing season in San Antonio?
San Antonio has roughly 282 frost-free days, which is enough time to grow turnip to maturity outdoors.
The rule of thumb
Sow turnip 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 San Antonio's frost dates.
Confidence 83/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.