When to plant spinach in Jackson
Spinach is cold-hardy, so every date keys off Jackson's frost dates of Mar 3.
Step 1 · Sow
Direct sow outdoors
Jan 20 – Feb 10
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Mar 1 – Mar 11
Picking runs until conditions turn against the crop.
Step 3 · Second sowing
Autumn / second sowing
Sep 10 – Sep 24
A second window for a fall crop, timed to mature before the first frost.
Step 4 · Second harvest
Autumn crop harvest
Oct 27 – Nov 6
Maturity window for the second sowing.
Window
Days to maturity
40 – 50 d
Jackson's 267-day season leaves this much room.
Spinach on Jackson'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 3
NOV 20
Common questions
When can I sow spinach outdoors in Jackson?
Direct-sow around mid January (Jan 20–Feb 10) in Jackson, based on its local frost dates. Confidence 82%.
When will spinach be ready to harvest in Jackson?
Expect to harvest from around early March (Mar 1–Mar 11) in Jackson, based on its local frost dates. Confidence 74%.
Can I plant spinach in autumn in Jackson?
Yes — Jackson supports a second, autumn sowing of spinach around early September (Sep 10–Sep 24), timed to mature before the first fall frost.
How long is the growing season in Jackson?
Jackson has roughly 267 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 Jackson's frost dates.
Confidence 82/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.