When to plant basil in Oklahoma City
Basil is frost-tender, so every date keys off Oklahoma City's last spring frost of Apr 3.
Step 1 · Sow
Start seeds indoors
Mar 11 – Apr 1
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Apr 27 – May 18
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jun 26 – Jul 26
Picking runs until conditions turn against the crop.
Window
Days to maturity
60 – 90 d
Oklahoma City's 223-day season leaves this much room.
Basil on Oklahoma City'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 3
NOV 5
Common questions
When can I sow basil outdoors in Oklahoma City?
Direct-sow around late April (Apr 27–May 18) in Oklahoma City, based on its local frost dates. Confidence 85%.
When will basil be ready to harvest in Oklahoma City?
Expect to harvest from around late June (Jun 26–Jul 26) in Oklahoma City, based on its local frost dates. Confidence 79%.
When should I start basil seeds indoors in Oklahoma City?
Start seeds indoors around mid March (Mar 11–Apr 1) in Oklahoma City, based on its local frost dates. Confidence 84%.
When can I transplant basil outdoors in Oklahoma City?
Transplant outdoors around late April (Apr 27–May 18) in Oklahoma City, based on its local frost dates. Confidence 85%.
How long is the growing season in Oklahoma City?
Oklahoma City has roughly 223 frost-free days, which is enough time to grow basil to maturity outdoors.
The rule of thumb
Sow basil 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 Oklahoma City's frost dates.
Confidence 88/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.