When to plant sweet potato in San Antonio
Sweet potato is frost-tender, so every date keys off San Antonio's last spring frost of Feb 21.
Step 1 · Plant
Transplant outdoors
Mar 27 – Apr 17
Once frost risk has passed and nights stay mild.
Step 2 · Harvest
Harvest window
Jun 25 – Jul 25
Picking runs until conditions turn against the crop.
Window
Days to maturity
90 – 120 d
San Antonio's 282-day season leaves this much room.
Sweet potato 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 will sweet potato be ready to harvest in San Antonio?
Expect to harvest from around late June (Jun 25–Jul 25) in San Antonio, based on its local frost dates. Confidence 75%.
When can I transplant sweet potato outdoors in San Antonio?
Transplant outdoors around late March (Mar 27–Apr 17) in San Antonio, based on its local frost dates. Confidence 83%.
How long is the growing season in San Antonio?
San Antonio has roughly 282 frost-free days, which is enough time to grow sweet potato to maturity outdoors.
The rule of thumb
Sow sweet potato 6–8 weeks before your last spring frost; plant out 2–3 weeks after it. 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.