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Garden Planning, Succession & Crop RotationFall Garden Planning Calendar
The fall garden starts in summer. Planning it means counting backward from your first frost and picking crops that thrive as the weather cools.
Key points
- Plan the fall garden in early summer, not when the heat breaks.
- Count back from your first fall frost using days to maturity plus a margin.
- Help seeds sprout in hot soil with moisture, shade and transplants.
- Keep protection ready for the first frosts.
When should you plan the fall garden?
The work begins in midsummer, often while the spring and summer crops are still producing. That is when seeds and transplants for cool-season crops need to go in, and it is easy to miss the window if you wait until the heat breaks.
Write the plan in early summer: choose crops, order seed, and mark the sowing dates on your calendar.
Think of it as a second spring that happens while summer is still going on. Many gardeners are surprised how much produce a well-timed fall garden can give.
How do you count back from the first fall frost?
Find your average first fall frost date from your local weather service, NOAA data or your extension office. For each crop, take the days to maturity from the packet, then add extra days for slower growth in shorter, cooler days and a few days for germination. Subtract the total from your frost date to find the latest sowing time.
For example, if your first frost usually falls around the middle of October and a crop needs about 60 days, a margin of two to three weeks means planning to sow in midsummer. This is an example of the method only, and your own dates will differ. Check your state extension planting guide for the range for your area.
Day length affects growth as well as cold. As days shorten, many crops grow more slowly, which is why the margin beyond the packet days to maturity is so important in fall. In some areas, growth nearly stops in midwinter even when it is mild.
Which crops suit the fall garden?
Cool-season crops often taste sweeter after light frost. Many brassicas, leafy greens, root crops and alliums are candidates. Frost-tolerant crops can stay in the garden past the first light frost, while tender crops need to be harvested before it.
Choose by hardiness. Some crops survive a hard freeze, others only a light one. Seed catalogs and extension guides rate hardiness.
Garlic, planted in fall in many areas, is an example of a crop that goes in at the end of the season and is harvested the next summer. Ask your extension office for local timing.
- Hardy: kale, collards, spinach, many root crops
- Moderately hardy: lettuce, many brassicas, beets
- Tender: beans, squash, cucumbers, tomatoes
How do you get seeds to sprout in summer heat?
Hot soil can stop germination in many cool-season seeds. Sow in the evening, water the seedbed so it stays moist, and consider shading the bed with a board or cloth until seedlings appear. Starting seedlings indoors or in a shaded spot and transplanting them is often easier than direct sowing in heat.
Mulch helps hold moisture and moderate soil temperature, and shade cloth can protect young plants during hot spells. Follow local water restrictions.
Choose varieties labeled for fall production when you can. Some are bred to size up quickly or to stand cold better, and seed catalogs often note them. Your extension office can recommend varieties that did well locally.
What should you do about pests and disease?
Late summer can bring heavy insect pressure on young brassicas and greens. Floating row cover, placed right after planting, can keep many pests out, provided edges are sealed and the cover is removed for pollination when it matters. Scout twice a week.
Identify the problem before treating, and ask extension for current options. Pesticide labels must be followed exactly, including pre-harvest intervals, and pollinators must be protected.
How do you protect the crop as cold arrives?
Keep row cover, cold frames or old sheets ready. Light frosts are often followed by weeks of mild weather, so protection can add weeks to the harvest. Water the day before a cold night, since moist soil holds heat better than dry soil.
Harvest tender crops before a hard freeze, and cut hardy crops as needed. For storing or preserving the harvest, rely on tested procedures from the National Center for Home Food Preservation or your extension office.
What else belongs on the fall calendar?
Fall is also a time to plan cover crops, plant garlic where local guidance says so, clean up disease-prone debris and take a soil sample. Record your results to improve next year's plan.
Cover crop choice and sowing dates depend on your region. Ask your extension office or NRCS for advice.
Take notes at the end of the fall season about which sowings worked and which flopped, since the margin you need differs from year to year.
Sources and further reading
Last reviewed: November 2026. Educational information, ranges only. Confirm timing with your county extension office.