A lot of people put their gardening gloves away in October. Summer is over, the tomatoes are done, and it feels like the season has ended.
Here’s the thing, though. If you grow on a windowsill or in a few pots, October is one of the easiest months to start. The heat is gone, bugs slow down, and cool-weather plants like cilantro actually prefer this weather. And indoors, the calendar barely matters at all.
What you should plant depends mostly on one thing: how cold your nights are about to get.
First, find your frost date
Search for your ZIP code plus “first frost date”. That’s roughly when your first freezing night usually arrives. It’s an average, not a promise, so keep an eye on the forecast too.
That date tells you which of these three groups you’re in:
- Cold regions (much of the North, the upper Midwest, New England, the mountains): frost has arrived or is only a few weeks away.
- Mild regions (the mid-Atlantic, the lower Midwest, much of the Pacific Northwest, the upper South): frost usually shows up in late October or November.
- Warm regions (Florida, the Gulf Coast, south Texas, southern Arizona, southern California): little or no frost. For you, fall is prime growing season.
What to plant indoors in October (anywhere in the US)
If you have a bright window, these work no matter where you live:
- Microgreens. The fastest win there is. Harvest in about 1 to 2 weeks, and they’re packed with flavor. Our microgreens growth stages guide walks you through it day by day.
- Cilantro. It hates summer heat and bolts fast, so a cool room in fall is perfect for it. See how to grow cilantro without it bolting.
- Mint. Start one from a single grocery-store sprig in a glass of water. Roots show up in about a week. Here’s the full mint guide.
- Parsley. Slow to sprout (give it two or three weeks), but once it gets going it keeps giving right through winter.
A quick tip for indoor growing this time of year: days are getting shorter. Put your pots in the brightest window you have, ideally one facing south. If your herbs start stretching and leaning toward the glass, they want more light. A cheap clip-on grow light fixes that.
What to plant outdoors in containers, by region
Cold regions
Honestly, most outdoor planting is done for the year. The one big exception is garlic. October is the classic month to plant it. Push individual cloves about 2 inches (5 cm) deep in a large pot or bed, pointy end up, and you’ll harvest next summer. Everything else can move indoors.
Mild regions
You’re in the sweet spot for cool-season crops in containers:
- Lettuce and spinach: a window box or any pot 6 to 8 inches (15 to 20 cm) deep is plenty. Pick outer leaves and they keep growing.
- Kale: tough, cold-hardy, and it often tastes sweeter after a light frost.
- Radishes: ready in about a month. Great if you want a quick result.
- Cilantro: it’ll happily grow outside through the cool months.
- Garlic: same as above, plant it now for next summer.
Warm regions
This is your spring. You can grow almost everything the rest of the country is putting away:
- Cherry tomatoes and peppers (South Florida and similar areas especially)
- Lettuce, kale, collards and bush beans
- Cilantro, parsley and basil
- Strawberries, which are planted in the fall in Florida
If you’re in Florida, we wrote a full guide just for you: Florida fall vegetable garden in pots.
October at a glance
| Your region | Indoors | Outdoors in containers |
|---|---|---|
| Cold | Microgreens, cilantro, mint, parsley | Garlic only |
| Mild | Microgreens, cilantro, mint, parsley | Lettuce, spinach, kale, radishes, cilantro, garlic |
| Warm | Microgreens, cilantro, mint, parsley | Tomatoes, peppers, greens, beans, herbs, strawberries |
What not to plant in October
Unless you’re somewhere warm, skip anything that loves heat: tomatoes, peppers, cucumbers, squash and basil planted outside. They’ll sit there and sulk once nights drop below about 50°F (10°C).
Already have basil or other herbs growing outside? Don’t let the first cold night catch them. Here’s how to bring herbs indoors for winter.
Start clean, start organic
Fall is a good moment to give your pots a fresh start. Use new potting mix rather than old, tired soil from last season, and mix in a little compost if you have some. No compost yet? Here’s how to compost at home, even without a yard. For seeds, plain untreated kitchen or garden seeds are all you need.
Pick one and start this week
You don’t need a big plan. Choose one plant from the list for your region, grab a pot, and start. A single tray of microgreens on the windowsill is enough to get you going.
New to growing food? Our complete beginner’s guide covers the basics.
Want a simple daily plan instead of guessing? UrbanLeaf gives you one easy task a day for your plant, with watering advice based on your local weather, so your first organic harvest actually happens. 🌱