When to plant leek in Colorado Springs
Leek is cold-hardy, so every date keys off Colorado Springs's frost dates of May 5.
Step 1 · Sow
Start seeds indoors
Feb 24 – Mar 17
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Apr 21 – May 12
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jul 30 – Aug 19
Picking runs until conditions turn against the crop.
Window
Days to maturity
100 – 120 d
Colorado Springs's 153-day season leaves this much room.
Leek on Colorado Springs'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
MAY 5
OCT 5
Common questions
When will leek be ready to harvest in Colorado Springs?
Expect to harvest from around late July (Jul 30–Aug 19) in Colorado Springs, based on its local frost dates. Confidence 79%.
When should I start leek seeds indoors in Colorado Springs?
Start seeds indoors around late February (Feb 24–Mar 17) in Colorado Springs, based on its local frost dates. Confidence 84%.
When can I transplant leek outdoors in Colorado Springs?
Transplant outdoors around late April (Apr 21–May 12) in Colorado Springs, based on its local frost dates. Confidence 88%.
How long is the growing season in Colorado Springs?
Colorado Springs has roughly 153 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 Colorado Springs's frost dates.
Confidence 88/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.