Osaka, Osaka · JP
When to plant in Osaka
Station data · 86% confidence Humid subtropical (Cfa)
Last spring frost
Mar 22
10% risk to Apr 9
First fall frost
Dec 5
10% risk from Nov 18
Frost-free days
258
2322 GDD (base 10°C)
The growing window at a glance
Frost-free growing season · 258 daysFrost risk (before Mar 22 / after Dec 5)
Planting calendar for Osaka
Sow, transplant and harvest windows for 30 crops, anchored to this location's frost dates. Tap any crop for its full guide.
CropJFMAMJJASOND
Beetcool_season
Broccolicool_season
Cabbagecool_season
Carrotcool_season
Cauliflowercool_season
Cilantro / Coriandercool_season
Garliccool_season
Kalecool_season
Leekcool_season
Lettucecool_season
Onioncool_season
Peascool_season
Potatocool_season
Radishcool_season
Spinachcool_season
Swiss chardcool_season
Turnipcool_season
Basilwarm_season
Bush (snap) beanwarm_season
Cucumberwarm_season
Eggplantwarm_season
Melon (cantaloupe/watermelon)warm_season
Okrawarm_season
Pepper (sweet & chili)warm_season
Pole beanwarm_season
Summer squash / Zucchiniwarm_season
Sweet cornwarm_season
Sweet potatowarm_season
Tomatowarm_season
Winter squash / Pumpkinwarm_season
Start indoorsTransplant outDirect sowHarvest
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.
About the Humid subtropical climate
Hot humid summers and mild winters with a long frost-free season punctuated by occasional cold snaps.
Nearby places
Similar climate (Humid subtropical)
Also see frost dates for Osaka.