Missouri’s temperate climate makes mid-spring the sweet spot for sowing turnip seeds directly in the garden. Finding the best time to plant turnip in missouri depends on your specific region and whether you want a spring or fall crop. This guide breaks down exactly when to plant, how to prepare your soil, and what to expect from your turnip harvest.
Turnips are a cool-season crop that thrives in Missouri’s variable weather. They grow quickly, often ready in 30 to 60 days, so timing matters more than you might think. Plant too early and frost might kill seedlings; plant too late and heat makes the roots woody and bitter.
Let’s get straight to the point. For most of Missouri, the best time to plant turnip in missouri for a spring harvest is from late March to mid-April. For a fall crop, aim for late July to early September. These windows give you the cool soil and air temperatures turnips love.
Best Time To Plant Turnip In Missouri
The exact dates shift depending on where you live in the state. Missouri spans USDA hardiness zones 5b to 7a, so northern and southern regions have different frost dates. Here’s a simple breakdown:
- Northern Missouri (zones 5b-6a): Spring planting: April 1 to April 15. Fall planting: July 25 to August 15.
- Central Missouri (zone 6b): Spring planting: March 25 to April 10. Fall planting: August 1 to August 20.
- Southern Missouri (zones 6b-7a): Spring planting: March 15 to April 5. Fall planting: August 10 to September 1.
These dates assume you’re sowing seeds directly in the garden. Turnips don’t transplant well because their taproots are delicate. You’ll get the best results by planting seeds where they’ll grow.
Spring Planting Window
Spring turnips need cool soil to germinate. Soil temperature should be at least 40°F (4°C), but 50°F to 60°F is ideal. In Missouri, this usually happens about 2 to 4 weeks before the last expected frost.
Check your local frost dates. For example, St. Louis’s last frost is around April 10, while Kansas City’s is April 15. Springfield’s last frost is typically April 5. Plant your turnip seeds about 2 weeks before these dates.
If you plant too early and a hard freeze hits, young turnip plants might bolt (go to seed) instead of forming good roots. But a light frost won’t hurt them—turnips are frost-tolerant once established.
Fall Planting Window
Fall turnips often taste sweeter because cool temperatures convert starches to sugars. The key is timing your planting so roots mature before a hard freeze, but after the hottest summer weather passes.
Count backward from your first fall frost date. Most turnip varieties need 45 to 65 days to mature. If your first frost is October 15, plant around August 15 for a 60-day variety. This gives you a harvest window from late September to mid-October.
Fall planting also avoids many pests like flea beetles and root maggots, which are more active in spring. Plus, the cooler soil reduces the risk of disease.
Soil Preparation For Turnips
Turnips grow best in loose, well-draining soil with a pH between 6.0 and 7.0. Heavy clay soil can cause misshapen roots, so amend it with compost or aged manure before planting.
Here’s a step-by-step guide to preparing your garden bed:
- Choose a sunny spot that gets at least 6 hours of direct sunlight daily.
- Remove rocks, sticks, and large clumps of soil. Turnips need fine, crumbly soil to develop straight roots.
- Work in 2 to 3 inches of organic matter. Compost improves drainage and adds nutrients.
- Test your soil pH. If it’s too acidic, add lime a few weeks before planting.
- Rake the bed smooth and water it a day before sowing seeds.
Turnips are heavy feeders, so they need plenty of phosphorus and potassium for root development. Avoid high-nitrogen fertilizers, which encourage leafy growth at the expense of roots.
Seed Spacing And Depth
Sow turnip seeds about 1/2 inch deep. Space seeds 1 inch apart in rows that are 12 to 18 inches apart. Once seedlings emerge and have 2 to 3 true leaves, thin them to 3 to 4 inches apart.
Thinning is crucial. Crowded turnips produce small, deformed roots. You can eat the thinned greens in salads or stir-fries.
For a continuous harvest, plant a new row every 2 to 3 weeks during your planting window. This technique, called succession planting, keeps you in fresh turnips all season.
Varieties That Perform Well In Missouri
Not all turnip varieties are equal in Missouri’s climate. Some handle heat better, while others are more cold-tolerant. Here are top picks for the state:
- Purple Top White Globe: A classic heirloom that matures in 50 to 60 days. It’s reliable and stores well.
- Tokyo Cross: A fast-growing hybrid ready in 35 to 40 days. It’s great for spring planting because it resists bolting.
- Hakurei: A sweet, mild Japanese variety that’s perfect for salads. Matures in 38 days.
- Seven Top: Grown mainly for its greens, not the root. Harvest leaves in 30 days.
- Golden Ball: A yellow-fleshed turnip that stores exceptionally well. Takes 60 days.
Choose varieties based on your planting season. For spring, go with quick-maturing types like Tokyo Cross. For fall, longer-season varieties like Purple Top give you bigger roots.
Succession Planting Tips
To maximize your harvest, stagger plantings every 2 weeks. For example, plant a row of Tokyo Cross on April 1, then another on April 15, and a third on May 1. This way, you’re not overwhelmed with a single harvest.
In fall, you can plant a mix of early and late varieties. Start with a 60-day variety in late July, then a 45-day variety in mid-August. Both will mature before a hard freeze.
Keep a garden journal to track planting dates and variety performance. This helps you refine your schedule year after year.
Watering And Care
Turnips need consistent moisture, especially during root development. Aim for 1 to 1.5 inches of water per week from rain or irrigation. Inconsistent watering causes roots to crack or become tough.
Water deeply once or twice a week rather than light daily sprinkles. Mulch around plants with straw or shredded leaves to retain moisture and suppress weeds.
Weeds compete with turnips for nutrients and water. Hand-pull weeds when they’re small to avoid disturbing turnip roots. A light hoeing works if you’re careful.
Pest And Disease Management
Common turnip pests in Missouri include flea beetles, aphids, and root maggots. Flea beetles leave small holes in leaves, while root maggots tunnel into roots.
Use row covers to protect young plants from insects. Floating row covers let in light and water but keep pests out. Remove covers when plants start flowering if you’re saving seed.
Diseases like clubroot and downy mildew can occur in wet conditions. Rotate your turnip crops every 2 to 3 years to prevent soilborne diseases. Avoid planting turnips where other brassicas (cabbage, broccoli) grew recently.
Harvesting Turnips
Turnips are ready to harvest when roots are 2 to 3 inches in diameter. Smaller roots are tender and sweet; larger ones can be woody and strong-flavored.
For spring turnips, harvest before temperatures consistently exceed 80°F. Heat triggers bolting and makes roots bitter. Fall turnips can stay in the ground until a hard freeze, but harvest before the ground freezes solid.
To harvest, loosen the soil with a garden fork and pull the roots gently. Cut off the greens, leaving about 1 inch of stem to prevent bleeding. Store turnips in a cool, humid place like a root cellar or refrigerator.
Storing Your Harvest
Turnips store well for several months if conditions are right. Ideal storage temperature is 32°F to 40°F with high humidity. A refrigerator crisper drawer works for short-term storage.
For longer storage, pack turnips in damp sand or sawdust in a cool basement. Check regularly for soft spots or rot. Remove any damaged roots immediately to prevent spread.
Turnip greens don’t store well. Use them within a few days or blanch and freeze them for later use in soups and stews.
Common Mistakes To Avoid
Even experienced gardeners make errors with turnips. Here are pitfalls to sidestep:
- Planting too early: Cold, wet soil causes seeds to rot. Wait until soil reaches 40°F.
- Planting too late in spring: Summer heat ruins root quality. Finish spring planting by mid-May.
- Skipping thinning: Crowded roots stay small and misshapen. Thin ruthlessly.
- Over-fertilizing with nitrogen: You get big leaves but tiny roots. Use a balanced fertilizer.
- Ignoring soil pH: Acidic soil stunts growth. Lime if needed.
Another common error is planting turnips in the same spot year after year. Crop rotation prevents disease buildup and nutrient depletion. Wait at least 3 years before planting brassicas in the same bed.
Frequently Asked Questions
Can I plant turnips in containers?
Yes, but choose a container at least 12 inches deep. Use loose potting mix and water frequently. Dwarf varieties like Hakurei work best.
How long do turnips take to grow in Missouri?
Most varieties mature in 45 to 60 days. Some quick types are ready in 30 to 35 days. Check the seed packet for exact days to maturity.
Do turnips need full sun?
Turnips grow best in full sun, but they tolerate partial shade. However, less sun means smaller roots. Aim for at least 6 hours of direct sunlight.
What’s the best time to plant turnip greens in Missouri?
For greens only, you can plant anytime from early spring to early fall. Harvest leaves when they’re 4 to 6 inches tall. Succession plant every 2 weeks for continuous greens.
Can I plant turnips after tomatoes or peppers?
Yes, turnips are a great follow-up crop to warm-season vegetables. After you harvest tomatoes in late summer, plant turnips for a fall crop. Just amend the soil with compost first.
Final Thoughts On Missouri Turnip Planting
Timing is everything with turnips in Missouri. Stick to the spring and fall windows outlined above, and you’ll get sweet, tender roots every time. Remember that local microclimates matter—a garden in the Ozarks might be cooler than one near the Mississippi River.
Pay attention to weather forecasts. If a late spring freeze is predicted, cover young plants with row covers or old sheets. If a fall heat wave hits, water deeply to keep soil cool.
Turnips are forgiving vegetables. Even if you miss the ideal window by a week, you’ll likely still get a harvest. The key is avoiding extremes: not too hot, not too cold, not too wet.
Start with a small patch this season. Experiment with different varieties and planting dates. You’ll quickly learn what works best in your specific Missouri garden. And once you taste a homegrown turnip—sweet, crisp, and nothing like the grocery store version—you’ll be hooked.
Happy planting, and enjoy your turnips straight from the garden or roasted with a little olive oil and salt. They’re worth the effort.