When to plant leek in Knoxville
Leek is cold-hardy, so every date keys off Knoxville's frost dates of Apr 8.
Step 1 · Sow
Start seeds indoors
Jan 28 – Feb 18
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Mar 25 – Apr 15
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jul 3 – Jul 23
Picking runs until conditions turn against the crop.
Window
Days to maturity
100 – 120 d
Knoxville's 201-day season leaves this much room.
Leek on Knoxville'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 8
OCT 28
Common questions
When will leek be ready to harvest in Knoxville?
Expect to harvest from around early July (Jul 3–Jul 23) in Knoxville, based on its local frost dates. Confidence 80%.
When should I start leek seeds indoors in Knoxville?
Start seeds indoors around late January (Jan 28–Feb 18) in Knoxville, based on its local frost dates. Confidence 85%.
When can I transplant leek outdoors in Knoxville?
Transplant outdoors around late March (Mar 25–Apr 15) in Knoxville, based on its local frost dates. Confidence 89%.
How long is the growing season in Knoxville?
Knoxville has roughly 201 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 Knoxville's frost dates.
Confidence 89/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.