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Regional Calendars, Climate & DataSoutheast Planting Calendar
In the Southeast the question is rarely whether a crop has time to grow. It is whether the crop will meet heat, heavy rain or a late freeze at the wrong stage.
Key points
- A long season still has a late-freeze risk, so keep protection on hand.
- Plan spring, summer and fall windows separately.
- Drainage and spacing do more against humidity problems than any rescue treatment.
- Time fall transplants with storm season in mind.
What makes Southeast planting different?
The Southeast has a long frost-free season, mild winters in much of the region and warm, wet summers. That opens the door to spring, summer and fall plantings and to overwintered crops. It also means pests, weeds and foliar diseases stay active for many months.
Planting dates still follow the same logic as elsewhere: know your average last frost and first frost, watch soil temperature and match crop to season. Mountain areas of the region behave more like the Northeast than like the coastal plain.
How should you use frost dates in the Southeast?
A long season can tempt growers to plant early, and a late freeze then punishes it. Treat your average last frost date as a probability, not a promise. Some years the last freeze comes earlier and some years it comes later, so keep row cover or frost cloth on hand for the weeks after you plant tender crops.
National Weather Service and NOAA records, along with state extension tables, give station averages. The USDA Plant Hardiness Zone Map reflects winter minimum temperatures and is not a planting-date tool.
- Keep frost cloth ready during early plantings.
- Watch forecasts on clear, calm nights, which are the riskiest.
- Move potted transplants indoors or under cover when a freeze threatens.
What are the spring, summer and fall windows?
Spring is the main window for tomatoes, peppers, beans, squash, corn, okra and sweet potatoes once soil has warmed. Cool-season greens and root crops fit before spring warmth, and again in fall and winter in the milder parts of the region.
Summer heat limits what can be planted midseason. Some crops stall their fruit set when nights stay warm, while heat-loving crops such as okra and southern peas keep going. Check your state extension planting guide for the range for your area.
How do rain and humidity affect the calendar?
Heavy rain delays field work and can drown seedlings in poorly drained ground. Raised beds and well-shaped rows help water move away. Wet weather also drives fungal diseases, so spacing, rotation and resistant varieties carry real weight in the plan.
If a disease or insect becomes a problem, ask extension for current recommendations. Any pesticide use must follow the label, observe pre-harvest intervals and protect pollinators, and applicator licensing varies by state.
What about hurricane and tropical storm season?
Late summer and fall plantings overlap with the Atlantic hurricane season. Young transplants can be shredded by wind and flooded by storm surge or heavy rain. Many growers time fall transplanting to avoid the peak of storm season where they can, and keep stakes, row cover and drainage in good shape.
Crop insurance and disaster programs are handled through USDA RMA and FSA and a crop insurance agent. Ask them about reporting dates and records before the season starts.
How do you build your Southeast calendar?
For example, if your last spring frost usually falls in early March, you might sow hardy greens in late winter, wait a couple of weeks past the frost date for tomatoes, and plan a fall succession starting in late summer. That is an illustration of counting from frost dates, not a recommendation for your county.
Write down planting, emergence and first harvest dates each year. After a few seasons you will see how your own soil and microclimate differ from the published averages.
Which crops fit which window, and what mistakes should you avoid?
A simple sorting helps. Group crops by temperature preference: cool-season crops, warm-season crops and heat-loving crops. Then place each group in the part of the year that suits it, and leave out the gaps when conditions are poor.
Overwintering crops such as garlic, onions and some greens are planted in fall in much of the region. Perennial crops such as blueberries and fruit trees follow their own planting seasons, so check extension guidance specific to those crops and to your county.
The first is planting too early after a warm spell, then losing plants to a freeze. The second is ignoring drainage and losing seedlings to standing water. The third is letting weeds take over during the long wet season, since weed seed germinates for months. A fourth mistake is skipping a soil test. Southeastern soils are often acidic and low in some nutrients, and a soil test with local recommendations shows what your field needs. Nutrient management rules vary by state, so follow your state guidance.
- Cool-season: greens, brassicas, peas, carrots
- Warm-season: tomatoes, peppers, beans, squash, corn
- Heat-loving: okra, southern peas, sweet potatoes
Sources and further reading
Last reviewed: November 2026. Educational information, ranges only. Confirm timing with your county extension office.