When to plant spinach in Auckland
Spinach is cold-hardy, so every date keys off Auckland's frost dates of Aug 20.
Step 1 · Sow
Direct sow outdoors
Jul 9 – Jul 30
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Aug 18 – Aug 28
Picking runs until conditions turn against the crop.
Window
Days to maturity
40 – 50 d
Auckland's 294-day season leaves this much room.
Spinach on Auckland'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
AUG 20
JUN 10
Common questions
When can I sow spinach outdoors in Auckland?
Direct-sow around early July (Jul 9–Jul 30) in Auckland, based on its local frost dates. Confidence 82%.
When will spinach be ready to harvest in Auckland?
Expect to harvest from around mid August (Aug 18–Aug 28) in Auckland, based on its local frost dates. Confidence 74%.
How long is the growing season in Auckland?
Auckland has roughly 294 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 Auckland's frost dates.
Confidence 82/100 · NOAA GHCN-Daily · 1991–2020 normals · frost dates are probabilities, not guarantees.