Arkansas gardeners should plan their collard greens planting around the state’s two distinct growing windows. Knowing the best time to plant collard greens in arkansas is the key to a bumper harvest of these nutritious, cold-tolerant greens. Whether you are a beginner or a seasoned grower, timing your planting correctly will save you from wasted seeds and disappointing yields.
Collard greens thrive in cool weather and can handle light frosts, which actually improve their flavor. In Arkansas, the climate varies from the Ozarks in the north to the Delta in the south, but the general rule holds: plant for a spring crop or a fall crop. Let’s break down exactly when to put those seeds or transplants in the ground.
Best Time To Plant Collard Greens In Arkansas
The sweet spot for planting collard greens in Arkansas is early spring, about 4 to 6 weeks before the last expected frost, and again in late summer for a fall harvest. For most of the state, this means March for spring and August for fall. However, your specific location within Arkansas matters—northern gardeners should lean toward the later end of these windows, while southern gardeners can start a bit earlier.
Collards are biennials grown as annuals. They need about 60 to 80 days to reach maturity, depending on the variety. If you plant too late in spring, the heat will make the leaves tough and bitter. If you plant too late in fall, a hard freeze might kill young plants before they establish. So, timing is everything.
Spring Planting Window
For spring, aim to set out transplants or direct sow seeds when the soil temperature reaches at least 45°F. In Arkansas, the average last frost date ranges from late March in the south to mid-April in the north. Here is a simple guide:
- Southern Arkansas (like Texarkana, El Dorado): Plant from mid-February to mid-March.
- Central Arkansas (like Little Rock, Hot Springs): Plant from early March to late March.
- Northern Arkansas (like Fayetteville, Mountain Home): Plant from mid-March to early April.
You can also start seeds indoors 4 to 6 weeks before your intended transplant date. This gives you a head start and protects seedlings from late cold snaps. Harden them off for a week before moving them outside.
Fall Planting Window
Fall is actually the preferred season for many Arkansas collard growers. The cooler temperatures and shorter days produce sweeter, more tender leaves. For a fall harvest, count backward from your first expected frost date. In Arkansas, the first frost typically arrives between mid-October in the north and early November in the south.
- Calculate your target maturity date: About 70 days before the first frost.
- Add a couple of weeks for slower growth in late summer heat.
- Plant seeds or transplants accordingly.
For most of Arkansas, this means planting from mid-July to mid-August. Southern gardeners can plant as late as early September. The key is to give the plants enough time to mature before a hard freeze (below 28°F) hits.
Understanding Arkansas Climate Zones
Arkansas spans USDA hardiness zones 6b in the north to 8a in the south. This 1.5-zone difference shifts planting dates by about two weeks. Check your specific zone using an online map or your local extension office. Zone 7a (central Arkansas) is the most common, so use the central dates as your baseline and adjust.
Collards are surprisingly frost-tolerant. Mature plants can survive temperatures down to 20°F, and a light frost (28-32°F) actually sweetens the leaves by converting starches to sugars. This makes fall-planted collards especially delicious.
Soil Preparation And Temperature
Collards grow best in fertile, well-drained soil with a pH between 6.0 and 6.8. Before planting, work in 2 to 4 inches of compost or aged manure. A soil test is ideal, but a balanced 10-10-10 fertilizer applied at planting time works well. Soil temperature should be at least 45°F for seeds to germinate, though 50-60°F is optimal.
If your soil is heavy clay, consider raised beds. Collards have deep taproots and need loose soil to develop properly. In Arkansas’s hot summers, mulch around the plants to keep the soil cool and moist.
Step-by-Step Planting Guide
- Choose a sunny location with at least 6 hours of direct sunlight daily.
- Prepare the soil by tilling or digging to a depth of 8-10 inches.
- Sow seeds 1/4 to 1/2 inch deep, spacing them 2-3 inches apart in rows 18-24 inches apart.
- Thin seedlings to 12-18 inches apart once they have 3-4 true leaves.
- For transplants, dig holes slightly larger than the root ball and space them 12-18 inches apart.
- Water thoroughly after planting and keep the soil consistently moist.
Direct sowing is common, but transplants give you a head start, especially for the fall crop when summer heat can stress young seedlings. If you direct sow in late summer, shade the soil with row cover or a light mulch to keep it cool.
Varieties For Arkansas
Not all collard varieties perform the same in Arkansas’s climate. Here are some reliable choices:
- Georgia Southern: A classic, heat-tolerant variety that does well in both spring and fall.
- Vates: Compact and cold-hardy, perfect for northern Arkansas.
- Champion: Slow to bolt in heat, making it a good spring option.
- Flash: A fast-maturing hybrid (60 days) ideal for tight windows.
- Morris Heading: Forms a loose head and handles light frosts well.
For fall planting, choose varieties with good cold tolerance. For spring, select those that resist bolting (going to seed) as temperatures warm.
Common Mistakes To Avoid
Even experienced gardeners slip up. Here are the most frequent errors with collard timing in Arkansas:
- Planting too late in spring: Heat stress leads to bitter, tough leaves.
- Planting too early in fall: Young seedlings may wilt in August heat.
- Ignoring microclimates: Your garden might be warmer or cooler than the general zone suggests.
- Overcrowding: Thin seedlings ruthlessly; crowded collards produce small, weak leaves.
- Neglecting water: Collards need about 1-1.5 inches of water per week, especially during dry spells.
One more thing: don’t plant collards where other brassicas (cabbage, kale, broccoli) grew the previous year. Rotate crops to prevent soil-borne diseases.
Harvesting And Extending The Season
You can start harvesting outer leaves when the plant reaches about 10 inches tall. Pick the largest leaves from the bottom, leaving the inner rosette to continue growing. This “cut-and-come-again” method can extend your harvest for weeks. For the fall crop, a heavy mulch of straw or leaves can protect roots through mild winters, allowing you to pick fresh greens into December or even January in southern Arkansas.
If a hard freeze is forecast, cover plants with row cover or old blankets. Uncover them during the day if temperatures rise above freezing. Collards can survive dips to 20°F with protection.
Fertilizing And Care
Collards are heavy feeders. Side-dress with nitrogen-rich fertilizer (like blood meal or fish emulsion) every 3-4 weeks after planting. Water deeply once a week, more often during dry periods. Watch for common pests like aphids, cabbage worms, and flea beetles. Use insecticidal soap or neem oil for organic control, or hand-pick caterpillars.
In Arkansas, flea beetles can be especially problematic in spring. Use row cover to exclude them until plants are well-established. For fall plantings, pests are usually less active.
Succession Planting For Continuous Harvest
To enjoy collards all season long, try succession planting. Sow a new batch every 2-3 weeks during your planting window. For spring, this means planting from mid-February to late March. For fall, plant from mid-July to early September. This ensures you always have young, tender plants coming along.
Keep in mind that collards taste best after a frost. So, the fall crop is often the most flavorful. Many Arkansas gardeners plant a large fall patch and a smaller spring one.
Frequently Asked Questions
What Is The Best Month To Plant Collard Greens In Arkansas?
March is generally the best month for spring planting, and August is ideal for fall planting. Adjust by two weeks north or south within the state.
Can I Plant Collard Greens In The Summer In Arkansas?
Summer planting is not recommended because heat causes bolting and bitterness. However, you can start seeds indoors in late June for a fall crop, but direct sowing in July is better.
How Late Can I Plant Collard Greens In Arkansas For A Fall Harvest?
You can plant as late as early September in southern Arkansas, but mid-August is safer for most of the state. Count back 70 days from your first frost date.
Do Collard Greens Need Full Sun In Arkansas?
Yes, they need at least 6 hours of direct sun daily. Partial shade is acceptable in hot climates but may reduce yields.
Can I Grow Collard Greens Year-Round In Arkansas?
With protection like row cover or a cold frame, you can extend the season into winter, but true year-round growth is unlikely due to summer heat and occasional hard freezes.
Final Tips For Arkansas Gardeners
Check your local extension office for precise frost dates and soil temperature readings. Keep a garden journal to track your planting dates and results—this will help you refine your timing year after year. Collards are forgiving, but getting the timing right makes all the difference between a mediocre patch and a prolific one.
Remember that collards are one of the easiest greens to grow in Arkansas. They tolerate poor soil, light frosts, and even some neglect. But if you nail the planting window, you’ll be rewarded with a steady supply of nutritious, flavorful greens from spring through fall. Start with a small patch, learn your microclimate, and expand as you gain confidence.
Whether you are planting for spring salads or fall stews, the key is to align your schedule with Arkansas’s two growing seasons. Plan ahead, prepare your soil, and watch your collards thrive. With the right timing, you’ll be harvesting fresh greens when your neighbors are still waiting for their tomatoes to ripen.
Happy gardening, and don’t forget to share your harvest with friends—collards are meant to be enjoyed together. If you have any questions, your local extension office is a fantastic resource for tailored advice. Now go get those seeds in the ground.