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Vegetable Crop Calendars (A–C)Vegetable Planting Calendar for Zones 6–8
Gardeners in the middle zones usually get two real growing seasons a year. The challenge is not whether crops will grow but when summer heat will end each window.
Key points
- Zone numbers do not give frost dates; find your own.
- Plan two windows, spring and fall, with a heat break between them.
- Stage warm-season crops after frost and warm soil.
- Use your extension office's county guide for local ranges.
Do zones 6 to 8 share one planting calendar?
No. The USDA Plant Hardiness Zone Map describes average annual extreme winter minimum temperature. It does not give frost dates or planting dates, and zones 6 to 8 cover a huge range of places with very different springs and falls.
Find your own average last spring frost and first fall frost from your local weather service or county extension office. Build the calendar from those, not from the zone number.
In these zones, the same zone number can mean a mild coastal garden or a cold mountain valley. Frost dates, not the map, make the difference, so look them up for your own town.
What can you plant first in spring?
Cool-season crops lead off. Alabama and Maryland sources show cool-weather crops going in early, such as radishes sown in Alabama from February to March and peas sown in Maryland once soil reaches about 40 degrees. The principle is the same everywhere: sow as soon as soil is workable.
Add onions, spinach, lettuce and root crops as soil permits. Check each packet for germination temperatures.
A practical start is a list of the cool-season crops you like and their packet germination temperatures. Test soil temperature each week from late winter and sow each crop as it becomes possible. Keep your first sowing small and repeat it in a week or two. If a cold snap damages the first batch, the second will still be coming along.
When do warm-season crops go in?
After the last frost, once soil has warmed. Tomatoes and peppers need warm nights as well, and Minnesota's pepper guidance suggests waiting for lows above about 50 degrees. Squash, beans, cucumbers and melons follow when soil is clearly warm.
If your region has a long season, plant in stages. A first planting early, a second a few weeks later and maybe a third in midsummer.
If your area has long summers, you may be able to plant a second round of warm-season crops in midsummer for a fall harvest. Count days to maturity back from your first fall frost to check. A short checklist before each planting helps: soil workable, frost risk checked, packet days counted and bed prepared.
How do you handle summer heat?
Heat is the main constraint in these zones. Iowa State Extension advises avoiding radishes in summer heat because they turn woody and bolt, and the same logic applies to spinach and lettuce.
Switch to heat-tolerant crops in midsummer, mulch to cool soil, and water deeply and steadily. Follow local water rules.
Mulch is the simplest tool for hot weather. A few inches of straw or shredded leaves keep roots cooler and soil moister, and they reduce weeds.
When should you plant the fall garden?
Count back from first fall frost for each crop, using days to maturity and a margin. Some crops can go in while it is still hot, but seedbeds need shading and moisture. Missouri Extension suggests August for fall peas, though Maryland Extension says fall peas often perform poorly there, so local guidance matters.
Choose crops that improve with cool weather, such as kale, turnips, radishes and carrots, and check state guidance for each.
Fall gardens have fewer pests in some places and more in others, so scout often. Pests that built up on summer crops move to the new seedlings quickly.
How do you avoid overlap and bare soil?
Plan what follows each crop. After peas or spring greens come beans or squash, and after summer crops come fall greens. A written plan avoids gaps.
Cover crops or mulch protect bare soil. Rotate plant families and keep a journal of dates and results.
A written crop map helps. Sketch the beds, note what grew in each and plan the next crop from a different plant family.
What does a year in zones 6 to 8 look like?
A typical year begins with hardy crops at the first workable soil, moves to tender crops after frost, rests or switches in peak heat, and restarts with fall crops. The exact dates depend on your place.
Ask your county extension office for a local vegetable planting guide, which may list ranges with frost caveats for your county.
Local knowledge counts. Talk to neighbors and master gardeners about when they see soil become workable and when frost usually ends, and compare their notes with extension guidance.
Sources and further reading
Last reviewed: November 2026. Educational information, ranges only. Confirm timing with your county extension office.