Cape Girardeau, MO Frost Dates
Average frost dates, USDA hardiness zone, and growing season length for Cape Girardeau, Missouri.
Gardening in Cape Girardeau
Southeast Missouri's river city sits where the Ozark foothills meet the Mississippi River floodplain. The transition creates diverse growing conditions within the metro.
Zone 6b with 197 frost-free days. The Mississippi River bottomland to the east is flat and fertile; the Ozark hills to the west are rocky and well-drained. Both grow food, just differently.
SEMO University and the surrounding Bootheel farmland provide agricultural knowledge. The Mississippi's influence on soil fertility is visible in the dark bottomland soil east of the city.
What This Means for Cape Girardeau Gardeners
The average last spring frost in Cape Girardeau is around April 8, and the average first fall frost arrives around October 22. That gives you approximately 197 frost-free days to work with.
A solid, workable season. Most standard vegetable varieties have enough time to mature, though the longest-season crops (like sweet potatoes at 90+ days or large watermelons at 85+ days) need to be started early and chosen carefully. Indoor seed starting isn't optional — it's how you buy the extra weeks that make the difference between a good harvest and a great one.
These dates are based on NOAA 30-year Climate Normal data for the Cape Girardeau area. Your actual frost dates could shift 2-3 weeks in either direction in any given year. Learn more about our data sources.
What to Grow in Cape Girardeau
Cape Girardeau's 197-day season gives you plenty of time for most vegetables with good planning. Start warm-season crops indoors to maximize your window. Cool-season crops thrive in your spring and fall shoulder seasons. Recommended starting points: tomatoes, peppers, lettuce, carrots, beans, broccoli, garlic, and basil.
See the full Missouri planting guide for all 40 plants: Missouri Planting Calendar. Or enter your zip code for exact planting dates personalized to Cape Girardeau.
More About Zone 6B
Cape Girardeau is in USDA Hardiness Zone 6B, which means average annual extreme minimum temperatures between -5°F to 0°F. View the full Zone 6B planting guide.
See the complete planting calendar for Missouri: Missouri Planting Calendar.
Other Cities in Missouri
Frequently Asked Questions
These dates are based on NOAA's 30-year Climate Normal data for the Cape Girardeau area. They represent historical averages, not predictions. In any given year, the actual last frost could be 2-3 weeks earlier or later. Microclimates within Cape Girardeau (urban heat islands, hilltops, low-lying valleys) can also shift your local frost dates by a week or more.
Start warm-season seeds indoors 6-8 weeks before your last frost (April 8) to maximize your 197-day window. Direct sow cold-hardy crops like peas and lettuce 3-4 weeks before last frost. Every week of early indoor starting matters at this season length. Enter your zip code for exact dates.