When to plant spinach in Kansas City
Spinach is cold-hardy, so every date keys off Kansas City's frost dates of Apr 3.
Step 1 · Sow
Direct sow outdoors
Mar 1 – Mar 22
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Apr 10 – Apr 20
Picking runs until conditions turn against the crop.
Step 3 · Second sowing
Autumn / second sowing
Aug 20 – Sep 3
A second window for a fall crop, timed to mature before the first frost.
Step 4 · Second harvest
Autumn crop harvest
Oct 6 – Oct 16
Maturity window for the second sowing.
Window
Days to maturity
40 – 50 d
Kansas City's 212-day season leaves this much room.
Spinach 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 can I sow spinach outdoors in Kansas City?
Direct-sow around early March (Mar 1–Mar 22) in Kansas City, based on its local frost dates. Confidence 84%.
When will spinach be ready to harvest in Kansas City?
Expect to harvest from around early April (Apr 10–Apr 20) in Kansas City, based on its local frost dates. Confidence 78%.
Can I plant spinach in autumn in Kansas City?
Yes — Kansas City supports a second, autumn sowing of spinach around mid August (Aug 20–Sep 3), timed to mature before the first fall frost.
How long is the growing season in Kansas City?
Kansas City has roughly 212 frost-free days, which is enough time to grow spinach to maturity outdoors.
The rule of thumb
Sow spinach 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.