When to plant leek in Salt Lake City
Leek is cold-hardy, so every date keys off Salt Lake City's frost dates of Apr 13.
Step 1 · Sow
Start seeds indoors
Feb 2 – Feb 23
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Mar 30 – Apr 20
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jul 8 – Jul 28
Picking runs until conditions turn against the crop.
Window
Days to maturity
100 – 120 d
Salt Lake City's 194-day season leaves this much room.
Leek on Salt Lake 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 13
OCT 26
Common questions
When will leek be ready to harvest in Salt Lake City?
Expect to harvest from around early July (Jul 8–Jul 28) in Salt Lake City, based on its local frost dates. Confidence 80%.
When should I start leek seeds indoors in Salt Lake City?
Start seeds indoors around early February (Feb 2–Feb 23) in Salt Lake City, based on its local frost dates. Confidence 85%.
When can I transplant leek outdoors in Salt Lake City?
Transplant outdoors around late March (Mar 30–Apr 20) in Salt Lake City, based on its local frost dates. Confidence 89%.
How long is the growing season in Salt Lake City?
Salt Lake City has roughly 194 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 Salt Lake City's frost dates.
Confidence 89/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.