Missouri Planting Guide & Growing Season
Missouri is in USDA hardiness zone with a growing season of 185 days. The average last spring frost is Apr 1 - Apr 30 and the average first fall frost is Oct 1 - Oct 31.
Growing Conditions in Missouri
How Missouri Compares
Compare Missouri's growing conditions with states that have similar climates.
| State | USDA Zone | Last Frost | First Frost | Season (days) |
|---|---|---|---|---|
| Missouri (MO) | Apr 1 - Apr 30 | Oct 1 - Oct 31 | 185 | |
| Alabama (AL) | Mar 1 - Apr 1 | Oct 25 - Nov 15 | 220 | |
| Alaska (AK) | May 15 - Jun 15 | Aug 15 - Sep 15 | 105 | |
| Arizona (AZ) | Feb 1 - Apr 15 | Oct 15 - Dec 15 | 270 | |
| Arkansas (AR) | Mar 15 - Apr 15 | Oct 15 - Nov 1 | 210 | |
| California (CA) | Jan 15 - Apr 15 | Oct 15 - Dec 31 | 290 |
Frequently Asked Questions About Gardening in Missouri
When should I start seeds indoors in Missouri?
In Missouri, the average last frost date is Apr 1 - Apr 30. Start most seeds indoors 6-8 weeks before this date. The USDA hardiness zone for Missouri is undefined, with a growing season of approximately 185 days.
What USDA hardiness zone is Missouri?
Missouri falls in USDA hardiness zones undefined. This affects which perennial plants will survive winter and influences optimal planting times.
When is the first frost in Missouri?
The average first frost date in Missouri is Oct 1 - Oct 31. Plan to harvest cold-sensitive crops before this date or protect them with row covers.
How long is the growing season in Missouri?
Missouri has an average growing season of 185 days, from the last frost (Apr 1 - Apr 30) to first frost (Oct 1 - Oct 31). This moderate season works well for most common vegetables.
Plan Your Garden
Use our seed starting calculator to get personalized planting dates, or browse all states.