Osaka, Osaka
When to plant basil in Osaka
Station data · 86% confidence warm seasontender to frost
- Direct sowlate MarchMar 29 – Apr 19 · 86% conf.
- Harvestlate MayMay 28 – Jun 27 · 77% conf.
- Start seeds indoorsmid FebruaryFeb 15 – Mar 8 · 82% conf.
- Transplant outdoorslate MarchMar 29 – Apr 19 · 86% conf.
The growing window at a glance
Basil at a glance in Osaka
- Needs soil above 16°C to germinate well.
- Days to maturity: 60–90 days.
- Climate zone: Humid subtropical (Cfa).
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 Osaka?
Direct-sow around late March (Mar 29–Apr 19) in Osaka, based on its local frost dates. Confidence 86%.
When will basil be ready to harvest in Osaka?
Expect to harvest from around late May (May 28–Jun 27) in Osaka, based on its local frost dates. Confidence 77%.
When should I start basil seeds indoors in Osaka?
Start seeds indoors around mid February (Feb 15–Mar 8) in Osaka, based on its local frost dates. Confidence 82%.
When can I transplant basil outdoors in Osaka?
Transplant outdoors around late March (Mar 29–Apr 19) in Osaka, based on its local frost dates. Confidence 86%.
How long is the growing season in Osaka?
Osaka has roughly 258 frost-free days, which is enough time to grow basil to maturity outdoors.