Toronto in September: what to plant
Averaged over the last 5 years of daily records, September in Toronto runs 14.3–22.1°C with about 64 mm of rain across the month. Here is what that climate actually supports.
❄️ No sub-zero nights in September in the last 5 years — frost is not the limiting factor here.
Best crops to sow now
- 🌱 Microgreens Fastest about 6 days to harvest 🪴 Windowsill pot — sheltered from outdoor weather
- 🍒 Cherry Radish about 23 days to harvest Recent mean 18.2°C — right in the sweet spot
- 🥬 Bok Choy about 35 days to harvest Recent mean 18.2°C — right in the sweet spot
- 🌿 Spinach about 37 days to harvest Recent mean 18.2°C — right in the sweet spot
- 🥗 Lettuce about 46 days to harvest Recent mean 18.2°C — right in the sweet spot
- 🍓 Strawberry about 53 days to harvest Recent mean 18.2°C — right in the sweet spot
- 🥕 Carrot about 68 days to harvest Recent mean 18.2°C — right in the sweet spot
- 🥔 Potato about 81 days to harvest Recent mean 18.2°C — right in the sweet spot
Leave these for another month
- 🌶️ Chili Pepper — Recent mean 18.2°C — right in the sweet spot
- 🍅 Tomato — Recent mean 18.2°C — right in the sweet spot
- 🎃 Pumpkin — Recent mean 18.2°C — right in the sweet spot
Other months in Toronto
Temperature and rainfall are 5-year daily normals from the ERA5 reanalysis via Open-Meteo. Suitability is scored with the same degree-day model the game runs on — it is not a generic planting calendar.