When to plant cilantro / coriander in Perth
Cilantro / Coriander is cold-hardy, so every date keys off Perth's frost dates of Aug 1.
Step 1 · Sow
Direct sow outdoors
Jul 18 – Aug 8
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Sep 1 – Sep 26
Picking runs until conditions turn against the crop.
Window
Days to maturity
45 – 70 d
Perth's 343-day season leaves this much room.
Cilantro / Coriander on Perth'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
AUG 1
JUL 10
Common questions
When can I sow cilantro / coriander outdoors in Perth?
Direct-sow around mid July (Jul 18–Aug 8) in Perth, based on its local frost dates. Confidence 80%.
When will cilantro / coriander be ready to harvest in Perth?
Expect to harvest from around early September (Sep 1–Sep 26) in Perth, based on its local frost dates. Confidence 72%.
How long is the growing season in Perth?
Perth has roughly 343 frost-free days, which is enough time to grow cilantro / coriander to maturity outdoors.
The rule of thumb
Sow cilantro / coriander 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 Perth's frost dates.
Confidence 80/100 · NOAA GHCN-Daily · 1991–2020 normals · frost dates are probabilities, not guarantees.