When to plant garlic in Christchurch
Garlic is cold-hardy, so every date keys off Christchurch's frost dates of Oct 16.
Step 1 · Sow
Direct sow outdoors
Apr 21 – May 12
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Dec 17 – Dec 17
Picking runs until conditions turn against the crop.
Window
Days to maturity
240 d
Christchurch's 211-day season leaves this much room.
Garlic on Christchurch'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
OCT 16
MAY 19
Common questions
When can I sow garlic outdoors in Christchurch?
Direct-sow around late April (Apr 21–May 12) in Christchurch, based on its local frost dates. Confidence 45%.
When will garlic be ready to harvest in Christchurch?
Expect to harvest from around mid December (Dec 17–Dec 17) in Christchurch, based on its local frost dates. Confidence 40%.
How long is the growing season in Christchurch?
Christchurch has roughly 211 frost-free days, which is marginal time to grow garlic to maturity outdoors.
The rule of thumb
Sow garlic 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 Christchurch's frost dates.
Confidence 45/100 · Curated · based on NASA POWER (modeled) 1991–2020 · frost dates are probabilities, not guarantees.