Perth, Western Australia
When to plant potato in Perth
Station data · 80% confidence cool seasonhalf-hardy to frost
- Direct sowmid JulyJul 18 – Aug 8 · 80% conf.
- Harvestlate SeptemberSep 26 – Nov 15 · 72% conf.
The growing window at a glance
Frost-free growing season · 343 daysFrost risk (before Aug 1 / after Jul 10)
Potato at a glance in Perth
- Needs soil above 7°C to germinate well.
- Days to maturity: 70–120 days.
- Climate zone: Mediterranean, hot summer (Csa).
Frost dates are probabilities, not guarantees. Your garden's microclimate — slopes, walls, urban heat, cold pockets — can shift these dates by a week or more. Use them as a confident starting point, then watch your local forecast.
Frequently asked
When can I sow potato outdoors in Perth?
Direct-sow around mid July (Jul 18–Aug 8) in Perth, based on its local frost dates. Confidence 80%.
When will potato be ready to harvest in Perth?
Expect to harvest from around late September (Sep 26–Nov 15) 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 potato to maturity outdoors.