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The best time to plant collard greens in Arkansas depends on whether you’re aiming for a spring or fall harvest.
For a spring crop, you’ll want to plant collard greens in Arkansas about 4 to 6 weeks before the last expected frost, which typically falls in late March or early April across most of the state.
For a fall harvest, the ideal window to plant collard greens in Arkansas is from late July through mid-August, giving the plants time to mature before the first hard freeze arrives in late October or November.
Collards are incredibly cold-hardy, and many Arkansas gardeners actually prefer the fall planting because the cooler weather brings out a sweeter, richer flavor in the leaves.
In this post, we’ll dig into the exact timing for planting collard greens in Arkansas, how to adjust for your specific region, and tips to get a bumper crop no matter which season you choose.
Let’s get growing.
When to Plant Collard Greens in Arkansas: The Simple Answer
If you want to plant collard greens in Arkansas with confidence, you need to work backward from your area’s frost dates.
The state stretches from the lowlands of the Mississippi Delta to the higher elevations of the Ozarks, so those dates can shift by a couple of weeks depending on where you call home.
Generally speaking, the fall planting window is your best bet because collards thrive in cooler temperatures and can even survive light freezes without missing a beat.
For spring planting, you can start seeds indoors about 6 weeks before the last frost, then transplant seedlings outside once the soil is workable and nighttime temps stay above 40°F.
But if you want to plant collard greens in Arkansas at the most forgiving time, aim for that late summer sowing for a fall garden.
1. Fall Planting for a Sweeter Harvest
Many seasoned growers will tell you that the best time to plant collard greens in Arkansas is in the late summer, specifically between July 20th and August 15th.
This timing allows the seeds to germinate in the warm soil of late July, then mature as the days gradually cool down into September and October.
A light frost actually improves the flavor of collard greens because the plant converts starches into sugars as a natural antifreeze mechanism.
So if you plant collard greens in Arkansas during this window, you’ll be harvesting leaves well into November or even December in milder years.
2. Spring Planting for an Early Start
If you simply can’t wait until fall, you can plant collard greens in Arkansas in the early spring, typically from mid-February to early April depending on your zone.
In southern Arkansas, near Texarkana or El Dorado, the last frost often arrives by late March, so you can get seeds in the ground in February.
In northern Arkansas, around Fayetteville or Mountain Home, you’ll want to wait until mid-April to avoid a late cold snap that could damage young seedlings.
Spring-planted collards will bolt faster once the heat of June arrives, so plan to harvest them quickly before the leaves turn bitter.
3. Using Succession Planting for a Continuous Supply
One smart way to maximize your harvest is to stagger the dates when you plant collard greens in Arkansas.
Instead of sowing all your seeds at once, plant a small batch every two weeks during the recommended window.
For example, you could plant collard greens in Arkansas in late July, then again in early August, and one more time in mid-August.
This way, you’ll have young, tender leaves coming in continuously rather than a single glut of greens all at once.
Succession planting also protects you from a sudden pest outbreak or an unseasonable heat wave wiping out your entire crop.
Regional Differences Across Arkansas
When you plant collard greens in Arkansas, you should always check your specific USDA hardiness zone because the state spans zones 6b through 8a.
The northern tier, including areas like Harrison and Jonesboro, sits in zones 6b and 7a, where winters are colder and the growing season is shorter.
In these northern regions, aim to plant collard greens in Arkansas for fall around late July, and for spring, wait until the soil has warmed to at least 50°F.
Central Arkansas, including Little Rock and Conway, falls mostly in zone 7b, offering a slightly longer window that stretches from early August for fall and late February for spring.
Southern Arkansas, including Pine Bluff and Magnolia, benefits from zone 8a, so you can plant collard greens in Arkansas as late as early September for a fall harvest.
The warmer southern climate also allows for a potential winter crop if you use row covers or a cold frame to protect the greens from the harshest cold snaps.
Soil Temperature Matters More Than Air Temperature
Collard seeds actually germinate best when the soil temperature is between 60°F and 75°F, which is warmer than the air might feel in early spring.
Before you plant collard greens in Arkansas, grab a soil thermometer and check the ground temperature at a depth of about 2 inches.
If the soil is still too cold, the seeds will sit dormant and may rot before they ever sprout, wasting your time and effort.
For fall planting, the warm late-July soil is perfect for quick germination, which is another reason that season is so reliable.
Tips for Success After You Plant Collard Greens in Arkansas
Once you’ve nailed the timing to plant collard greens in Arkansas, your job isn’t done just yet.
Collards are heavy feeders, so they’ll appreciate a rich, well-draining soil amended with compost or a balanced fertilizer before you sow.
Water consistently to keep the soil evenly moist, especially during the hot days of late summer when fall crops are just getting started.
Mulch around the base of the plants to retain moisture, regulate soil temperature, and keep weeds from stealing nutrients.
Keep an eye out for cabbage worms and aphids, which love collard leaves just as much as you do, and treat them promptly with an organic insecticide.
Thinning and Spacing for Better Growth
When you plant collard greens in Arkansas, don’t overcrowd them because they need room to spread their broad, leafy tops.
Space transplants about 18 to 24 inches apart, and thin direct-seeded rows so that plants are at least 12 inches apart.
If you leave them too crowded, the competition for water and nutrients will result in smaller, tougher leaves.
You can eat the thinnings as baby greens, so nothing goes to waste while you’re giving the remaining plants room to thrive.
Harvesting at the Right Time
The leaves are ready to pick when they’re about 8 to 12 inches long and have a deep, rich green color.
Snip the outer leaves first, leaving the center of the plant intact so it keeps producing new growth for weeks.
If you plant collard greens in Arkansas in the fall, you can keep harvesting through the winter in many parts of the state, especially with a little frost protection.
Just remember that the flavor only gets better after a frost, so don’t panic when the temperature dips.
So, When to Plant Collard Greens in Arkansas?
Plant collard greens in Arkansas in late July to mid-August for a fantastic fall harvest, or in late February to early April for a spring crop.
The exact date depends on your region, but the fall window is the most forgiving and rewarding choice for most gardeners.
Collards are one of the easiest greens to grow in the Natural State, and with the right timing, you’ll enjoy a steady supply of tasty, nutritious leaves.
So pick your season, check your local frost dates, and get those seeds in the ground.
Happy gardening.