When to Plant Cabbage in Fort Smith, AR
Published: April 24, 2026
Cabbage Planting Dates for Fort Smith, AR
| Start seeds indoors | January 25–February 1 |
| Last frost (average) | March 15 |
| Transplant outdoors | February 22–March 4 |
| Minimum soil temperature | 45°F |
| Expect first harvest | April 23 – June 2 |
| Fall crop planting | August 23–September 2 |
| Fall crop harvest | October 22 |
| First fall frost (average) | November 15 |
⚠ Start cabbage indoors 6–8 weeks before last frost. Transplant 2–4 weeks before last frost. Very frost tolerant — withstands temperatures as low as 20°F. Also plant in late summer for fall harvest.
Best Cabbage Varieties for Fort Smith, AR
Consult a Fort Smith-area nursery or your state extension office for cabbage varieties proven in Zone 7a.
Growing Cabbage in Fort Smith
Fort Smith sits in Zone 7a, with an average last frost of March 15 and first fall frost around November 15 — giving a 245-day frost-free growing season. Cool-season crops like cabbage benefit from Fort Smith's cooler spring and fall windows, when temperatures stay in the 55–75°F sweet spot that produces the best flavor and least bolting.
Fort Smith's moderate climate supports cabbage on the standard transplant calendar with minimal special accommodation. Succession planting — sowing fresh seeds or setting new transplants every 2–3 weeks through spring — stretches the harvest window and gives you a backup crop if pests hit the first planting.
Fort Smith's heavy clay soil benefits from raised beds or deep organic matter amendment before planting cabbage. Clay retains moisture well but compacts easily — add 3 to 4 inches of compost and work it in to 12 inches before planting. Consistent watering (1.5 inches per week) is especially important in clay soil, which can crack and pull away from roots during dry spells; mulch around plants to stabilize moisture.
Cabbage Calendar for Fort Smith
| Month | Task |
|---|---|
| January | Start seeds indoors under grow lights |
| March | Last frost — harden off seedlings outdoors |
| February | Transplant outdoors into warm soil |
| April | Expect first harvest window to open |
| August | Start fall crop — transplants or direct sow |
| November | First fall frost — harvest remaining, end of outdoor season |
Cabbage Tips for Fort Smith Gardeners
- •Space plants 18 inches apart — crowding reduces head size and promotes fungal disease.
- •Side-dress with nitrogen 3–4 weeks after transplanting to support rapid leaf formation.
- •Succession plant cabbage in Fort Smith every 2–3 weeks through spring to extend the harvest window into summer.
Common Cabbage Pests in Fort Smith
- •Cabbage Worm — peaks July in Zone 7a (active May–September); green caterpillars on brassicas; apply Bt spray or use row covers.
- •Cabbage Looper — peaks July in Zone 7a (active May–September); loop-walking green caterpillars; Bt spray works well.
- •Aphid — peaks July in Zone 7a (active May–September); monitor closely during peak season and treat early.
Check plants every 2–3 days during peak season — early intervention prevents most infestations from becoming serious.
What to Plant with Cabbage in Fort Smith
In Fort Smith's moderate climate, Onion and Dill are the most beneficial plants to grow alongside cabbage. Onion deters carrot fly, aphids, and several root-zone pests through sulfur compounds. Keep cabbage away from Tomato — it competes for nutrients or shares pest pressure.
Frequently Asked Questions
When should I plant cabbage in Fort Smith, AR?
In Fort Smith (Zone 7a), start cabbage seeds indoors around January 25–February 1 and transplant outdoors around February 22–March 4. The city's average last frost of March 15 is the anchor date — count 7 weeks back for seed starting and 3 weeks back for transplanting.
What zone is Fort Smith, AR for cabbage growing?
Fort Smith is USDA Zone 7a. For cabbage, this means a frost-free growing season of roughly 35 weeks running from March 15 to November 15. Cool-season crops like cabbage thrive in this zone with both spring and fall planting windows available.
When is cabbage harvest season in Fort Smith?
Expect the first cabbage harvest in Fort Smith around April 23, with harvest continuing through June 2. This is based on 60–100 days from transplant or direct sow. A fall crop planted August 23–September 2 adds a second harvest around October 22.
How long does it take to grow cabbage in Fort Smith, AR?
From transplant or direct sow to first harvest, cabbage takes 60–100 days in Fort Smith's climate. Based on a typical planting date of February 22–March 4, expect your first harvest around April 23. Fort Smith's Zone 7a transition-zone climate produces maturity times right in the middle of the stated range.
What soil does cabbage need in Fort Smith?
Fort Smith's heavy clay soil compacts easily and drains slowly — problematic for cabbage which needs oxygenated roots. Build a raised bed or amend deeply with 3–4 inches of compost worked into the top 12 inches. Add gypsum if the soil is severely compacted. Consistent watering matters especially in clay because the soil can crack and pull away from roots during dry spells.