Osaka, Osaka
When to plant spinach in Osaka
Station data · 86% confidence cool seasonvery-hardy to frost
- Direct sowearly FebruaryFeb 8 – Mar 1 · 86% conf.
- Harvestmid MarchMar 20 – Mar 30 · 77% conf.
The growing window at a glance
Frost-free growing season · 258 daysFrost risk (before Mar 22 / after Dec 5)
Spinach at a glance in Osaka
- Needs soil above 4°C to germinate well.
- Days to maturity: 40–50 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 spinach outdoors in Osaka?
Direct-sow around early February (Feb 8–Mar 1) in Osaka, based on its local frost dates. Confidence 86%.
When will spinach be ready to harvest in Osaka?
Expect to harvest from around mid March (Mar 20–Mar 30) in Osaka, based on its local frost dates. Confidence 77%.
How long is the growing season in Osaka?
Osaka has roughly 258 frost-free days, which is enough time to grow spinach to maturity outdoors.