When to plant leek in Oklahoma City
Leek is cold-hardy, so every date keys off Oklahoma City's frost dates of Apr 3.
Step 1 · Sow
Start seeds indoors
Jan 23 – Feb 13
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Mar 20 – Apr 10
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jun 28 – Jul 18
Picking runs until conditions turn against the crop.
Window
Days to maturity
100 – 120 d
Oklahoma City's 223-day season leaves this much room.
Leek 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 will leek be ready to harvest in Oklahoma City?
Expect to harvest from around late June (Jun 28–Jul 18) in Oklahoma City, based on its local frost dates. Confidence 79%.
When should I start leek seeds indoors in Oklahoma City?
Start seeds indoors around late January (Jan 23–Feb 13) in Oklahoma City, based on its local frost dates. Confidence 84%.
When can I transplant leek outdoors in Oklahoma City?
Transplant outdoors around mid March (Mar 20–Apr 10) in Oklahoma City, based on its local frost dates. Confidence 88%.
How long is the growing season in Oklahoma City?
Oklahoma City has roughly 223 frost-free days, which is enough time to grow leek to maturity outdoors.
The rule of thumb
Sow leek 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 Oklahoma City's frost dates.
Confidence 88/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.