Basil

Basil dies at 32°F and stalls below 60°F — Missouri frost dates alone won’t protect it. Zone-by-zone calendar for seeds, transplants, and direct sowing.

Oregon spans 5 climate zones—and 5 different basil planting windows. Get exact transplant dates for your zone, from the coast to the high desert.

Tennessee spans 5 USDA zones — plant basil too early and your harvest stalls for weeks. Zone-by-zone dates, soil temperature thresholds, and DMR varieties.

Indiana spans USDA zones 5b–7a with a 4-week spread in last frost dates. Use this zone-by-zone basil planting calendar with city-specific frost data to plant on the right week—not a day too soon.

South Carolina basil planting dates vary by 6 weeks depending on your zone. Use this city-by-city frost calendar so you never lose seedlings to a late cold snap.

Colorado frost dates vary 7 weeks between Aspen and Grand Junction. Get your exact basil transplant date — and why 50°F nights are as damaging as frost.

Wisconsin basil fails when planted too early — cold slows growth before it kills. Get exact indoor start dates and zone-by-zone transplant windows.

Seattle gardeners wait until June despite a March 21 frost date. Here’s your exact basil planting window by Washington zone, city, and climate — backed by WSU Extension.

Minnesota Zone 4b gardeners: start basil indoors by April 3 or lose weeks of harvest. Get exact planting dates for all 5 MN zones, the soil temperature check that prevents cold damage, and why last frost day is not transplant day.

Your Virginia zone determines when basil is safe outside — wait until nights stay above 50°F. Zone-by-zone transplant dates and indoor start calendar inside.

Plant basil 8 weeks earlier in Wilmington than Boone. Exact dates for every NC zone from 6a to 8b — plus why 54°F nights damage basil before it even freezes.

Basil planted in cold Georgia soil stalls for weeks. Zone 7a to 9a planting dates, the 65°F soil rule, and downy-mildew-resistant varieties for humid summers.