Mississippi gardeners should focus on soil temperature rather than calendar dates for mustard greens. Knowing the best time to plant mustard greens in mississippi can mean the difference between a bumper crop and a disappointing patch of bolted leaves. The state’s long growing season offers two prime windows, but you need to watch the thermometer, not just the calendar.
Mustard greens thrive in cool weather. They get bitter and bolt when it gets too hot. In Mississippi, that means you have a spring window and a fall window. Both are short, so timing matters.
Let’s break down exactly when to put those seeds in the ground. We’ll cover soil temps, frost dates, and even a few tricks for extending your harvest.
Understanding Mississippi’s Growing Zones
Mississippi spans USDA hardiness zones 7b through 9a. The northern part of the state is cooler, while the Gulf Coast stays warmer longer. This affects your planting dates.
For example, a gardener in Tupelo might plant two weeks later in spring than someone in Biloxi. And the fall window opens earlier up north. You need to adjust for your specific location.
Zone 7B Northern Mississippi
This area includes cities like Oxford, Tupelo, and Corinth. Winters are colder, with last frost dates around mid-April. First frost in fall hits around mid-October.
- Spring planting: Late March to early April
- Fall planting: Late August to early September
- Soil temp target: 40°F to 75°F
Zone 8A Central Mississippi
Jackson, Meridian, and Vicksburg fall here. Last frost is usually late March. First frost comes in late October.
- Spring planting: Mid-March to early April
- Fall planting: Early September to mid-September
- Soil temp target: 45°F to 75°F
Zone 8B-9a Southern Mississippi
The Gulf Coast, including Biloxi, Gulfport, and Hattiesburg, is warmer. Last frost can be as early as late February. First frost may not come until November.
- Spring planting: Late February to mid-March
- Fall planting: Mid-September to early October
- Soil temp target: 50°F to 80°F
Best Time To Plant Mustard Greens In Mississippi
Now we get to the core question. The best time to plant mustard greens in mississippi is actually two times: early spring and late summer. You get two harvests per year if you time it right.
In spring, plant as soon as the soil can be worked. That means about 4 to 6 weeks before your last expected frost. Mustard seeds can germinate in soil as cold as 40°F, though they prefer 55°F to 65°F.
For fall, plant about 6 to 8 weeks before your first expected frost. The greens actually taste sweeter after a light frost. So you want them mature just as cool weather sets in.
Spring Planting Window
Spring is tricky because mustard greens hate heat. If you plant too late, they’ll bolt before you get a decent harvest. Aim for these dates based on your zone:
- Zone 7b: March 15 to April 1
- Zone 8a: March 1 to March 20
- Zone 9a: February 15 to March 10
Check your soil temperature with a simple probe thermometer. Insert it 2 inches deep in the morning. If it’s consistently above 40°F, you’re good to go.
Fall Planting Window
Fall is actually the better season for mustard greens in Mississippi. The weather cools down, and the greens get that sweet, mild flavor. Plus, pests are less active.
- Zone 7b: August 20 to September 5
- Zone 8a: September 1 to September 15
- Zone 9a: September 10 to September 25
Don’t wait too long. Mustard greens need about 40 to 50 days to mature. If you plant in late October, you might not get a full harvest before a hard freeze.
Soil Preparation For Mustard Greens
Mustard greens aren’t picky, but they do best in rich, well-drained soil. Prepare your bed a week before planting. Add compost or aged manure to boost nutrients.
The soil pH should be between 6.0 and 7.5. Test your soil with a simple kit from a garden center. If it’s too acidic, add lime. If it’s too alkaline, add sulfur.
Step-By-Step Soil Prep
- Clear the area of weeds and debris
- Loosen the soil to 8 inches deep
- Mix in 2 inches of compost
- Rake the bed smooth
- Water lightly and let it settle for 2 days
Good soil prep means healthier plants and bigger yields. Don’t skip this step.
Planting Techniques
You can direct sow mustard green seeds or start them indoors. Direct sowing is easier and works well for this fast-growing crop.
Sow seeds 1/4 inch deep and 1 inch apart. Cover lightly with soil and water gently. Keep the soil moist until germination, which takes 5 to 10 days.
Thinning Seedlings
Once seedlings have 2 to 3 true leaves, thin them to 6 inches apart. This gives each plant room to grow. You can eat the thinnings in salads.
- Space rows 12 to 18 inches apart
- Thin to 6 inches between plants
- Use scissors to avoid disturbing roots
Succession Planting
To extend your harvest, plant a new row every 2 weeks. This works great in spring and fall. Just stop planting 4 weeks before your first frost date.
Succession planting ensures you have fresh greens all season. It’s a simple trick that pays off.
Watering And Fertilizing
Mustard greens need consistent moisture. Water 1 to 1.5 inches per week, either from rain or irrigation. Inconsistent watering makes leaves tough and bitter.
Use a soaker hose or drip irrigation to keep water off the leaves. Wet leaves can lead to fungal diseases. Water in the morning so foliage dries during the day.
Fertilizer Schedule
Mustard greens are heavy feeders. Apply a balanced fertilizer (10-10-10) at planting time. Side-dress with nitrogen when plants are 4 inches tall.
- At planting: 1 pound of 10-10-10 per 100 square feet
- At 4 inches tall: 1/2 pound of ammonium nitrate per 100 feet
- Repeat every 3 weeks if needed
Too much nitrogen can make leaves soft and prone to pests. Follow the rates carefully.
Common Pests And Diseases
In Mississippi, flea beetles and aphids are the main pests. They show up in spring and fall. Use row covers to protect young plants.
Cabbage worms and slugs can also be a problem. Hand-pick them or use organic controls like diatomaceous earth. Rotate crops to prevent soil-borne diseases.
Pest Control Tips
- Use floating row covers from day one
- Apply neem oil for aphids
- Set beer traps for slugs
- Plant marigolds nearby to repel pests
Diseases like downy mildew and white rust can occur in humid weather. Space plants well for air circulation. Avoid overhead watering.
Harvesting Mustard Greens
You can start harvesting when leaves are 4 to 6 inches long. Pick outer leaves first, leaving the inner ones to grow. This “cut-and-come-again” method gives you multiple harvests.
For a full harvest, cut the entire plant 1 inch above the soil. It may regrow if weather is cool. In hot weather, it will bolt quickly.
When To Harvest
- Baby greens: 20 to 30 days after planting
- Full size: 40 to 50 days
- Before bolting: Harvest immediately if flowers appear
Harvest in the morning when leaves are crisp. Rinse and store in the fridge. Mustard greens keep for about a week.
Extending The Season
You can push the limits a bit with some simple techniques. Use cold frames or row covers to protect plants from early frosts. This can add 2 to 4 weeks to your fall harvest.
In spring, use shade cloth to keep plants cool as temperatures rise. This can delay bolting by a week or two. But it’s not a miracle cure.
Winter Gardening
In southern Mississippi, you might get a winter harvest. Plant in October and use a cold frame. Some varieties like ‘Southern Giant Curled’ are quite cold-tolerant.
Watch the forecast. If a hard freeze is coming, cover plants with frost cloth. They can survive down to about 20°F with protection.
Best Varieties For Mississippi
Not all mustard greens are equal. Some handle heat better, while others thrive in cool weather. Choose varieties suited to your planting window.
Spring Varieties
- ‘Florida Broadleaf’ – Heat-tolerant, slow to bolt
- ‘Tendergreen’ – Mild flavor, good for spring
- ‘Red Giant’ – Beautiful color, bolt-resistant
Fall Varieties
- ‘Southern Giant Curled’ – Cold-hardy, classic flavor
- ‘Green Wave’ – Spicy, frilly leaves
- ‘Old Fashioned’ – Heirloom, excellent for fall
Try a mix of varieties for different textures and flavors. They all grow well in Mississippi’s climate.
Common Mistakes To Avoid
Even experienced gardeners make errors with mustard greens. Here are the most common ones and how to avoid them.
Planting Too Late In Spring
If you plant in May, the heat will make leaves bitter. Stick to the early spring window. Use a soil thermometer to be sure.
Planting Too Early In Fall
September heat can stress young plants. Wait until soil temperatures drop below 80°F. Late August is usually safe in north Mississippi.
Overcrowding
Thin your seedlings! Crowded plants compete for nutrients and water. They also get more diseases. Give them space.
Ignoring Soil PH
Mustard greens need neutral soil. Acidic soil leads to poor growth. Test and amend as needed.
Frequently Asked Questions
Can I Plant Mustard Greens In The Summer In Mississippi?
Summer is too hot for most varieties. The leaves will be bitter and the plants will bolt quickly. Stick to spring and fall for best results.
How Late Can I Plant Mustard Greens In Mississippi For A Fall Harvest?
You can plant as late as early October in southern Mississippi. In northern areas, aim for early September. Check your first frost date and count back 50 days.
Do Mustard Greens Need Full Sun In Mississippi?
They prefer full sun, but partial afternoon shade can help in warmer areas. In the Gulf Coast, some shade during the hottest part of the day is beneficial.
What Is The Best Fertilizer For Mustard Greens In Mississippi?
A balanced 10-10-10 fertilizer works well. Side-dress with nitrogen after thinning. Avoid high-nitrogen fertilizers in fall, as they can make plants tender to frost.
Can I Grow Mustard Greens In Containers In Mississippi?
Yes, containers work great. Use a pot at least 8 inches deep. Keep them well-watered, as containers dry out fast. Place them in a spot with morning sun and afternoon shade.
Final Tips For Success
Mustard greens are one of the easiest crops for Mississippi gardeners. They grow fast, need little care, and produce a lot of food. The key is timing.
Remember: soil temperature matters more than the calendar. Invest in a soil thermometer. It’s cheap and takes the guesswork out of planting.
Don’t be afraid to experiment. Try different varieties and planting dates. Keep notes on what works in your garden. Over time, you’ll dial in the perfect schedule for your spot.
And don’t forget to share your harvest. Mustard greens are a staple in Southern cooking. They pair well with cornbread, beans, and ham hocks. Your family and neighbors will apprecite the fresh greens.
So get your soil ready, watch the temps, and plant at the right time. You’ll be enjoying homegrown mustard greens in no time. Happy gardening in Mississippi.