When to Plant Carrots in Oklahoma
Published: April 21, 2026
Oklahoma gardeners in Zone 7a have a 35-week growing season for carrot (March 15 to November 15). Oklahoma's spring and fall windows both work well for carrot — some gardeners plant both successions for a long harvest. This guide gives exact dates for Oklahoma based on your local frost calendar.
Carrot Planting Dates for Oklahoma
| Start seeds indoors | Year-round |
| Last frost (average) | March 15 |
| Direct sow outdoors | February 15–25 |
| Expect first harvest | April 26 – May 6 |
| Fall crop start | September 6–16 |
| Fall harvest | November 15 |
| First fall frost (average) | November 15 |
Growing Carrots in Oklahoma's Climate
Oklahoma's moderate Zone 7a climate is well-suited to carrot 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 carrot harvest significantly in Oklahoma. 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 carrot pests to watch for in Oklahoma include Carrot Fly and Wireworm. The first line of defense is companion planting: Tomato and Onion 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.
Carrot Garden Calendar for Oklahoma
| Month | Task | Notes |
|---|---|---|
| January | — | Dormant season |
| February | Direct sow seeds | Sow seeds 1/4–1/2 inch deep, 3 inches apart |
| March | — | Dormant season |
| April | First harvest window opens | Carrot begins producing 70–80 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 carrot; cover plants on frost nights |
| December | — | Dormant season |
Carrot Growing Tips for Oklahoma Gardeners
- •Direct sow ONLY — transplanting carrots causes forked, misshapen roots every time.
- •Soil must be loose and rock-free to at least 12 inches deep; raised beds are ideal.
- •Oklahoma's moderate climate supports succession planting — sow new transplants or seeds every 3 weeks during spring to extend the harvest window into fall.
- •Thin to 3-inch spacing aggressively — crowded carrots fork and grow stunted.
Companion Planting for Carrots in Oklahoma
In Oklahoma's moderate climate, planting carrot with Tomato and Onion helps deter pests and improve soil. Avoid planting near Dill and Parsnip, which inhibit carrot growth through root chemistry or shared pest pressure. See the full carrot companion planting guide for the complete list.
Carrots Planting Dates by City in Oklahoma
Top cities in Oklahoma — select for city-level frost dates and planting calendars.
Frequently Asked Questions
When should I plant carrot in Oklahoma?
In Oklahoma (Zone 7a), start carrot seeds indoors around Year-round and transplant outdoors around null — 0 weeks after the state's average last frost of March 15.
What is the last frost date in Oklahoma?
Oklahoma'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 carrot year-round in Oklahoma?
carrot is a cool-season crop in Oklahoma, 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 carrot varieties grow best in Oklahoma?
For Oklahoma's Zone 7a, Danvers, Nantes, and Scarlet Nantes are universal reliable choices.
When do I start carrot seeds indoors in Oklahoma?
Carrot does not need indoor starting in Oklahoma — direct sow around February 15–25 once soil reaches 45°F. Indoor starting is not recommended for this crop because carrot transplants poorly.