When to plant spinach in Jacksonville
Spinach is cold-hardy, so every date keys off Jacksonville's frost dates of Feb 9.
Step 1 · Sow
Direct sow outdoors
Dec 29 – Jan 19
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Feb 7 – Feb 17
Picking runs until conditions turn against the crop.
Step 3 · Second sowing
Autumn / second sowing
Oct 7 – Oct 21
A second window for a fall crop, timed to mature before the first frost.
Step 4 · Second harvest
Autumn crop harvest
Nov 23 – Dec 3
Maturity window for the second sowing.
Window
Days to maturity
40 – 50 d
Jacksonville's 311-day season leaves this much room.
Spinach on Jacksonville'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
FEB 9
DEC 17
Common questions
When can I sow spinach outdoors in Jacksonville?
Direct-sow around late December (Dec 29–Jan 19) in Jacksonville, based on its local frost dates. Confidence 84%.
When will spinach be ready to harvest in Jacksonville?
Expect to harvest from around early February (Feb 7–Feb 17) in Jacksonville, based on its local frost dates. Confidence 76%.
Can I plant spinach in autumn in Jacksonville?
Yes — Jacksonville supports a second, autumn sowing of spinach around early October (Oct 7–Oct 21), timed to mature before the first fall frost.
How long is the growing season in Jacksonville?
Jacksonville has roughly 311 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 Jacksonville's frost dates.
Confidence 84/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.