When to Plant Cabbage in Missouri (2026 Guide)
Cabbage is a versatile and nutrient-rich vegetable that thrives in the cool temperatures of Missouri's spring and autumn. Knowing when to plant cabbage is essential to ensure a bountiful harvest. In Missouri, the frost-free growing season varies depending on your zone, with the last spring frost occurring around April 10 in Zone 6b and April 19 in Zone 6a.
For Missouri gardeners, timing is crucial. After the last spring frost, which can be as late as April 19 in some areas, the planting window opens for spring crops. Conversely, planning for a fall planting after the summer heat breaks is equally important, allowing for a successful harvest before the October 12 first fall frost in Zone 6a or October 22 in Zone 6b.
Understanding your specific zone and its characteristics will help you make informed decisions regarding cabbage planting. By considering the average frost dates and growing conditions in your area, such as in cities like St. Louis or Kansas City, you can maximize your gardening success and grow healthy, delicious cabbage to enjoy all year round.
Planting Schedule by USDA Zone in Missouri
| Zone | Indoor start | Transplant out | Direct sow | Harvest |
|---|---|---|---|---|
| Zone 6b | Start February 15 – March 1, ~6–8 weeks before April 10 | Transplant outdoors April 10 – April 24, after the last frost | Direct sow April 24 – May 10, after the last frost | Harvest July 15 – September 15, before the first frost |
| Zone 6a | Start February 25 – March 10, ~6–8 weeks before April 19 | Transplant outdoors April 19 – May 3, after the last frost | Direct sow April 25 – May 10, after the last frost | Harvest July 1 – September 1, before the first frost |
Cabbage Planting Windows in Missouri
- Indoor start: Start your cabbage seeds indoors between February 15 and March 10, depending on your zone in Missouri.
- Transplant outdoors: Plan to transplant your cabbage seedlings outdoors from April 10 to May 3, based on your local frost dates.
- Harvest: You can expect to harvest your cabbage between July 1 and September 15, ensuring they are collected before the frost sets in.
Common Mistakes Growing Cabbage in Missouri
- Many new gardeners in Missouri underestimate the timing of their last frost date. This oversight can lead to shock or death of seedlings. Always check local forecast data before planting your cabbage seedlings to ensure they are not vulnerable to late frosts.
- Growing cabbage during the hottest part of Missouri's summer can lead to bolting and poor head formation. Pay attention to the local climate patterns and consider a fall planting if summer temperatures soar. Cabbage thrives in cooler temperatures, ideally between 45°F and 75°F.
- Some gardeners in Missouri neglect proper soil pH testing and lime application. Cabbage is susceptible to diseases like clubroot when grown in acidic soil. Testing your soil and adjusting the pH to between 6.5 and 7.0 will promote better growth and reduce disease risk.
- Not rotating crops can result in long-term soil issues. Growing cabbage and other brassicas in the same place year after year can increase disease prevalence, particularly in Missouri. Implement a strict 3-year rotation to maintain soil health and prevent problems.
- Ignoring pest management, especially for slugs, is a common mistake for Missouri cabbage growers. Slugs thrive in Missouri's humid conditions and can devastate young plants. Implement traps or use copper tape to deter these pests effectively.
Frequently Asked Questions
What if I'm in a cold pocket of Missouri?
If you find yourself in a colder region, consider starting your cabbage seeds indoors earlier and implementing row covers during unexpected chill events. This can help protect your young plants from late frosts. Adjust your transplanting dates accordingly.
Can I still plant cabbage in May?
Planting cabbage in May may still yield reasonable results; however, be cautious about high summer temperatures, which can lead to bolting. Pay close attention to your local weather patterns and consider quick-maturing varieties to ensure a successful harvest.
How do I know when to pick my cabbage?
Cabbage is ready to harvest when heads feel firm and are about the size of a basketball or larger. You can also check the leaves; they should be a rich, vibrant color. To prevent splitting, harvest as soon as they reach maturity.
What are the best cabbage varieties for Missouri?
Look for early-maturing varieties like 'Early Jersey Wakefield' or 'Savoy' types that can withstand Missouri's variable temperatures. Consider both spring and fall varieties based on your desired growing season to maximize yield.
How can I prevent pests from damaging my cabbage?
Regularly inspect your cabbage for pests like slugs or cabbage moths. Use organic methods such as diatomaceous earth, traps, or hand-picking. Also, consider companion planting with strong-scented herbs to deter pests naturally.
Keep Learning
City guides in Missouri
Other crops in Missouri
Typical fall sowing window for Cabbage in Missouri: July 27 – August 17.