Grow · field guide
What to Plant in a Fall Garden
Most gardens quit in September, right before the easiest season starts. Cool weather means fewer pests, fewer weeds, no bolting, and greens that turn sweeter after a frost. The catch is timing: you plant a fall garden in the heat of late summer. Here is what to grow and when.
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Why fall is the easy season
Cool-season crops like greens, roots, and brassicas grow better in fall than spring. They do not bolt in the rising heat, pest pressure drops off, and a light frost actually sweetens kale, carrots, and spinach as the plants convert starches to sugar.
Time it from your first frost
The trick is to count backward. Take your first fall frost date, subtract the crop's days to maturity, then add about 2 weeks because growth slows as days shorten. That gives you the last safe date to sow.
The planner does this math for your ZIP and flags the closing window, so the fall planting date does not slip past you in the busy summer.
What to plant for fall
Quick and cold-hardy crops, with roughly how long each needs:
- Radishes: about 28 days, the fastest fall crop.
- Spinach and leaf lettuce: about 42 to 45 days, and they love cool weather.
- Kale: about 60 days, and frost makes it sweeter.
- Carrots: about 68 days, and they hold in the ground into winter.
- Garlic: planted in fall for a harvest next summer, a separate fall job worth doing.
Stretch the season with cover
A cold frame or a row cover on hoops buys several more weeks and can carry hardy greens through winter in milder zones. Throw the cover on when hard frosts arrive and you can pick spinach and kale long after the open garden is done.
Keep going
Questions, answered straight
In mid to late summer, while it is still hot. Count back from your first fall frost by the crop's days to maturity, plus about 2 weeks for slower fall growth, to find the last safe sow date.
Cool-season crops: kale, spinach, lettuce, radishes, carrots, and brassicas like broccoli. Garlic is also planted in fall, for harvest the following summer.
Light frost improves many of them. Kale, spinach, and carrots turn sweeter after a frost. A cold frame or row cover protects them through harder freezes.
In many zones, yes, with a cold frame or row cover over hardy greens. They grow slowly but stay harvestable far later than the open garden.
Know when it's time to plant
Give us your ZIP and we'll email you a planting checklist for your exact frost dates, this month's list right now, then once a month when sow windows open.
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