When to plant potato in Perth
Potato is cold-hardy, so every date keys off Perth's frost dates.
Step 1 · Sow
Direct sow outdoors
Jul 10 – Jul 31
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Sep 18 – Nov 7
Picking runs until conditions turn against the crop.
Window
Days to maturity
70 – 120 d
From sowing to first pick.
Common questions
When can I sow potato outdoors in Perth?
Direct-sow around early July (Jul 10–Jul 31) in Perth, based on its local frost dates. Confidence 80%.
When will potato be ready to harvest in Perth?
Expect to harvest from around mid September (Sep 18–Nov 7) in Perth, based on its local frost dates. Confidence 74%.
How long is the growing season in Perth?
Perth has roughly 365 frost-free days, which is enough time to grow potato to maturity outdoors.
The rule of thumb
Sow potato 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 82/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.