When to plant cucumber in San Antonio
Cucumber is frost-tender, so every date keys off San Antonio's last spring frost of Feb 21.
Step 1 · Sow
Start seeds indoors
Feb 13 – Mar 6
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Mar 13 – Apr 3
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
May 2 – May 22
Picking runs until conditions turn against the crop.
Window
Days to maturity
50 – 70 d
San Antonio's 282-day season leaves this much room.
Cucumber 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 cucumber outdoors in San Antonio?
Direct-sow around mid March (Mar 13–Apr 3) in San Antonio, based on its local frost dates. Confidence 83%.
When will cucumber be ready to harvest in San Antonio?
Expect to harvest from around early May (May 2–May 22) in San Antonio, based on its local frost dates. Confidence 75%.
When should I start cucumber seeds indoors in San Antonio?
Start seeds indoors around mid February (Feb 13–Mar 6) in San Antonio, based on its local frost dates. Confidence 79%.
When can I transplant cucumber outdoors in San Antonio?
Transplant outdoors around mid March (Mar 13–Apr 3) 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 cucumber to maturity outdoors.
The rule of thumb
Sow cucumber 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.