Perth, Western Australia
When to plant basil in Perth
Station data · 80% confidence warm seasontender to frost
- Direct sowearly AugustAug 8 – Aug 29 · 80% conf.
- Harvestearly OctoberOct 7 – Nov 6 · 72% conf.
- Start seeds indoorslate JuneJun 27 – Jul 18 · 76% conf.
- Transplant outdoorsearly AugustAug 8 – Aug 29 · 80% conf.
The growing window at a glance
Basil at a glance in Perth
- Needs soil above 16°C to germinate well.
- Days to maturity: 60–90 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 basil outdoors in Perth?
Direct-sow around early August (Aug 8–Aug 29) in Perth, based on its local frost dates. Confidence 80%.
When will basil be ready to harvest in Perth?
Expect to harvest from around early October (Oct 7–Nov 6) in Perth, based on its local frost dates. Confidence 72%.
When should I start basil seeds indoors in Perth?
Start seeds indoors around late June (Jun 27–Jul 18) in Perth, based on its local frost dates. Confidence 76%.
When can I transplant basil outdoors in Perth?
Transplant outdoors around early August (Aug 8–Aug 29) in Perth, based on its local frost dates. Confidence 80%.
How long is the growing season in Perth?
Perth has roughly 343 frost-free days, which is enough time to grow basil to maturity outdoors.