What to plant in Tokyo in September
September in Tokyo marks the transition into autumn, offering a favorable period for a wide range of cool-season crops. With average temperatures around 24.7°C and significant rainfall, gardeners can expect good conditions for sowing and transplanting. This month is ideal for establishing crops that will mature in the cooler months ahead.
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Spinach
Direct sow in well-drained soil. Can be harvested young for baby leaves.
Radish
Direct sow thinly. Harvest promptly to prevent woodiness.
Lettuce
Direct sow or start in trays for transplanting. Protect from heavy rain.
Carrot
Direct sow in deeply worked, stone-free soil for straight roots.
Cabbage
Sow in protected seedbed / indoor tray for transplanting in 4-6 weeks.
Broccoli
Sow in protected seedbed / indoor tray for transplanting in 4-6 weeks.
Kale
Direct sow or start in seedbeds. Can be harvested continuously.
Turnip
Direct sow. Harvest roots when small and tender.
Beetroot
Direct sow. Thin seedlings to allow root development.
Garlic
Plant individual cloves, pointed end up, 5-10 cm deep.
Onion (sets)
Plant small onion sets just below the soil surface.
Mudas
Mudas
Cabbage
Transplant pre-grown seedlings into well-prepared garden beds.
Broccoli
Transplant pre-grown seedlings into fertile, well-drained soil.
Kale
Transplant seedlings into an area with good air circulation.
Swiss Chard
Transplant seedlings into rich, well-drained soil.
Tasks
Monthly tasks
Monitor soil moisture closely, as September's high rainfall (206.1mm) may reduce the need for supplemental watering, but ensure good drainage to prevent waterlogging. Continue weeding to reduce competition for nutrients and moisture. Begin preparing beds for winter crops by amending soil with compost. Watch for late-season pests and diseases, and address them promptly. Support taller plants if needed due to potential autumn winds.