When to plant leek in Raleigh
Leek is cold-hardy, so every date keys off Raleigh's frost dates of Mar 26.
Step 1 · Sow
Start seeds indoors
Jan 15 – Feb 5
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Mar 12 – Apr 2
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jun 20 – Jul 10
Picking runs until conditions turn against the crop.
Window
Days to maturity
100 – 120 d
Raleigh's 227-day season leaves this much room.
Leek on Raleigh'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
MAR 26
NOV 9
Common questions
When will leek be ready to harvest in Raleigh?
Expect to harvest from around mid June (Jun 20–Jul 10) in Raleigh, based on its local frost dates. Confidence 80%.
When should I start leek seeds indoors in Raleigh?
Start seeds indoors around mid January (Jan 15–Feb 5) in Raleigh, based on its local frost dates. Confidence 85%.
When can I transplant leek outdoors in Raleigh?
Transplant outdoors around mid March (Mar 12–Apr 2) in Raleigh, based on its local frost dates. Confidence 89%.
How long is the growing season in Raleigh?
Raleigh has roughly 227 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 Raleigh's frost dates.
Confidence 89/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.