Los Angeles in September: what to plant
Over the last 5 years, September in Los Angeles has run 17.9–30.5°C with about 22 mm of rain across the month. Here is what weather like that will carry to harvest.
Everything above is a five-year average. In the game it is this — the weather Los Angeles is actually having, today.
Grow one in Los Angeles's weather right now →❄️ No sub-zero nights in September in the last 5 years — frost is not the limiting factor here.
🗓️ No night at or below 0°C in the last 5 years — frost is not a limiting factor here, and tender crops can stay out year-round.
☀️ About 10.5 h of sunshine a day this month. Within the month it cools by about 4.3°C from the first ten days to the last — the window for autumn sowings is opening.
Sow this month — when would you harvest?
Assuming you sow in mid-September, then adding up the warmth Los Angeles usually gets, one day at a time — which is why some of these run past the end of the month.
| Crop | Days | Harvest around |
|---|---|---|
| 🌶️ Okra | 283 | Jun 24 |
| 🥢 Yardlong bean | 221 | Apr 23 |
| 🌱 Microgreens | 6 | Sep 20 |
| 🥒 Luffa | 257 | May 29 |
| 🥒 Bitter melon | 243 | May 15 |
| 🌿 Amaranth greens | 49 | Nov 2 |
| 🌻 Sunflower | 94 | Dec 17 |
| 🏵️ Marigold | 41 | Oct 25 |
| 🧅 Onion | 70 | Nov 23 |
| 🍃 Mint | 22 | Oct 6 |
| 🌿 Basil | 22 | Oct 6 |
| 🧅 Chives | 24 | Oct 8 |
Best crops to sow now
- 🌶️ Okra Ideal about 82 days to harvest Recent mean 24.2°C — right in the sweet spot
- 🥢 Yardlong bean Ideal about 81 days to harvest Recent mean 24.2°C — right in the sweet spot
- 🌱 Microgreens Ideal about 6 days to harvest 🪴 Windowsill pot — sheltered from outdoor weather
- 🥒 Luffa Good about 101 days to harvest Recent mean 24.2°C — right in the sweet spot
- 🥒 Bitter melon Good about 93 days to harvest Recent mean 24.2°C — right in the sweet spot
- 🌿 Amaranth greens Good about 39 days to harvest Recent mean 24.2°C — right in the sweet spot
- 🌻 Sunflower Good about 62 days to harvest Recent mean 24.2°C — right in the sweet spot
- 🏵️ Marigold Good about 35 days to harvest Recent mean 24.2°C — right in the sweet spot
- 🧅 Onion Marginal about 55 days to harvest Recent mean 24.2°C — right in the sweet spot
- 🍃 Mint Ideal about 21 days to harvest 🪴 Windowsill pot — sheltered from outdoor weather
- 🌿 Basil Ideal about 22 days to harvest 🪴 Windowsill pot — sheltered from outdoor weather
- 🧅 Chives Ideal about 23 days to harvest 🪴 Windowsill pot — sheltered from outdoor weather
Leave these for another month
- 🌿 Coriander — Recent mean 24.2°C is too hot (ideal 8–24°C)
- 🫘 Broad bean — Recent mean 24.2°C is too hot (ideal 6–22°C)
- 🥕 Parsnip — Recent mean 24.2°C is too hot (ideal 6–22°C)
Other months in Los Angeles
📍 Somewhere else? Look up your own city →
Temperature and rainfall come from Open-Meteo's historical observations for Los Angeles, averaged day by day over the last 5 years. Whether a crop finishes in time is worked out from its own starting temperature and heat requirement — those numbers are listed on each crop page if you want to check them.