When to plant leek in Kansas City
Leek is cold-hardy, so every date keys off Kansas 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 22 – Apr 12
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jun 30 – Jul 20
Picking runs until conditions turn against the crop.
Window
Days to maturity
100 – 120 d
Kansas City's 212-day season leaves this much room.
Leek on Kansas 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
OCT 30
Common questions
When will leek be ready to harvest in Kansas City?
Expect to harvest from around late June (Jun 30–Jul 20) in Kansas City, based on its local frost dates. Confidence 78%.
When should I start leek seeds indoors in Kansas City?
Start seeds indoors around late January (Jan 23–Feb 13) in Kansas City, based on its local frost dates. Confidence 83%.
When can I transplant leek outdoors in Kansas City?
Transplant outdoors around late March (Mar 22–Apr 12) in Kansas City, based on its local frost dates. Confidence 84%.
How long is the growing season in Kansas City?
Kansas City has roughly 212 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 Kansas City's frost dates.
Confidence 87/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.