When to Plant Collard Greens in Arkansas
Published: April 24, 2026
Arkansas gardeners in Zone 7a have a 35-week growing season for collard green (March 15 to November 15). Arkansas's spring and fall windows both work well for collard green — some gardeners plant both successions for a long harvest. This guide gives exact dates for Arkansas based on your local frost calendar.
Collard Green Planting Dates for Arkansas
| Start seeds indoors | February 8–15 |
| Last frost (average) | March 15 |
| Transplant outdoors | February 22–March 4 |
| Direct sow outdoors | February 22–March 4 |
| Expect first harvest | April 23 – May 8 |
| Fall crop start | September 6–16 |
| Fall harvest | November 5 |
| First fall frost (average) | November 15 |
Dates above assume Zone 7a, the most common zone in Arkansas. Gardeners in cooler Little Rock (Zone 7b) plant 1–2 weeks later; warmer Fayetteville (Zone 7a) can plant 1–2 weeks earlier.
⚠ Direct sow or transplant collard greens 3–4 weeks before last frost. Extremely cold hardy — withstands temps to 15°F. Can be grown as a perennial in Zones 8+. Fall planting produces the best-flavored greens.
Growing Collard Greens in Arkansas's Climate
Arkansas's moderate Zone 7a climate is well-suited to collard green with minimal special accommodation. The standard transplant calendar works as written, and harvest windows line up with what seed packets recommend without adjustment.
Succession planting extends your collard green harvest significantly in Arkansas. A second planting 3 to 4 weeks after the first gives you a backup in case of pest pressure and extends the total harvest window into early fall.
Common collard green pests to watch for in Arkansas include Cabbage Worm and Aphid. The first line of defense is companion planting: Onion and Garlic planted nearby discourage several of these pests by confusing host-plant identification or repelling adults before they can lay eggs. Weekly garden walks in the early morning catch problems when they're still manageable.
Collard Green Garden Calendar for Arkansas
| Month | Task | Notes |
|---|---|---|
| January | — | Dormant season |
| February | Transplant outdoors | Soil temp must be 45°F+; nighttime lows above 50°F |
| March | Harden off seedlings | Set seedlings outdoors 1–2 hours daily, increasing gradually |
| April | First harvest window opens | Collard Green begins producing 60–75 days after transplant |
| May ← | Watch for bolting | Harvest promptly; spring heat arrives quickly |
| June | — | Dormant season |
| July | — | Dormant season |
| August | — | Dormant season |
| September | Fall crop planting | Transplant or direct sow for fall harvest before frost |
| October | — | Dormant season |
| November | First frost approaches | Harvest remaining collard green; cover plants on frost nights |
| December | — | Dormant season |
Collard Green Growing Tips for Arkansas Gardeners
- •Harvest outer leaves continuously once plants reach 10 inches — the central growing point produces for months.
- •In Zones 8+ collard greens often overwinter and produce for 2–3 years as a perennial.
- •Arkansas's moderate climate supports succession planting — sow new transplants or seeds every 3 weeks during spring to extend the harvest window into fall.
- •Frost improves flavor dramatically — southern tradition is to wait for the first frost before harvesting.
Companion Planting for Collard Greens in Arkansas
In Arkansas's moderate climate, planting collard green with Onion and Garlic helps deter pests and improve soil. Avoid planting near Tomato and Strawberry, which inhibit collard green growth through root chemistry or shared pest pressure. See the full collard green companion planting guide for the complete list.
Collard Greens Planting Dates by City in Arkansas
Top cities in Arkansas — select for city-level frost dates and planting calendars.
Frequently Asked Questions
When should I plant collard green in Arkansas?
In Arkansas (Zone 7a), start collard green seeds indoors around February 8–15 and transplant outdoors around February 22–March 4 — 3 weeks before the state's average last frost of March 15.
What is the last frost date in Arkansas?
Arkansas's average last frost date is March 15 in the state's most common Zone 7a. Frost dates vary by city — higher elevations and northern counties run 1 to 3 weeks later than the state average. See the city list below for city-level frost dates.
Can I grow collard green year-round in Arkansas?
collard green is a cool-season crop in Arkansas, with spring and fall windows. Summer heat bolts the plants before they can produce a harvestable crop. Succession planting every 2–3 weeks stretches the harvest window.
What collard green varieties grow best in Arkansas?
For Arkansas's Zone 7a, consult a local nursery or extension office for collard-greens variety recommendations.
When do I start collard green seeds indoors in Arkansas?
Start collard green seeds indoors in Arkansas around February 8–15, which is 5 weeks before the state's average last frost of March 15. Use grow lights and keep soil temperatures at 70–75°F for fastest germination.