Osaka, Osaka
When to plant broccoli in Osaka
Station data · 86% confidence cool seasonhardy to frost
- Harvestearly MayMay 7 – Jun 1 · 77% conf.
- Start seeds indoorsearly FebruaryFeb 8 – Mar 1 · 82% conf.
- Transplant outdoorsearly MarchMar 8 – Mar 29 · 86% conf.
The growing window at a glance
Frost-free growing season · 258 daysFrost risk (before Mar 22 / after Dec 5)
Broccoli at a glance in Osaka
- Needs soil above 5°C to germinate well.
- Days to maturity: 60–85 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 will broccoli be ready to harvest in Osaka?
Expect to harvest from around early May (May 7–Jun 1) in Osaka, based on its local frost dates. Confidence 77%.
When should I start broccoli seeds indoors in Osaka?
Start seeds indoors around early February (Feb 8–Mar 1) in Osaka, based on its local frost dates. Confidence 82%.
When can I transplant broccoli outdoors in Osaka?
Transplant outdoors around early March (Mar 8–Mar 29) 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 broccoli to maturity outdoors.