When to plant leek in Omaha
Leek is cold-hardy, so every date keys off Omaha's frost dates of Apr 18.
Step 1 · Sow
Start seeds indoors
Feb 7 – Feb 28
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Apr 5 – Apr 26
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jul 14 – Aug 3
Picking runs until conditions turn against the crop.
Window
Days to maturity
100 – 120 d
Omaha's 176-day season leaves this much room.
Leek on Omaha'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 18
OCT 14
Common questions
When will leek be ready to harvest in Omaha?
Expect to harvest from around mid July (Jul 14–Aug 3) in Omaha, based on its local frost dates. Confidence 78%.
When should I start leek seeds indoors in Omaha?
Start seeds indoors around early February (Feb 7–Feb 28) in Omaha, based on its local frost dates. Confidence 83%.
When can I transplant leek outdoors in Omaha?
Transplant outdoors around early April (Apr 5–Apr 26) in Omaha, based on its local frost dates. Confidence 84%.
How long is the growing season in Omaha?
Omaha has roughly 176 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 Omaha's frost dates.
Confidence 87/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.