When to Plant Turnips in Lafayette, LA
Published: April 24, 2026
Turnip Planting Dates for Lafayette, LA
| Start seeds indoors | Year-round |
| Last frost (average) | February 1 |
| Direct sow outdoors | January 11–21 |
| Minimum soil temperature | 40°F |
| Expect first harvest | February 15 – March 12 |
| Fall crop planting | October 20–30 |
| Fall crop harvest | November 24 |
| First fall frost (average) | December 15 |
⚠ Direct sow turnips 2–4 weeks before last frost for spring crop. Best planted in late summer (6–8 weeks before first fall frost) for fall harvest — frost sweetens the roots. Fast-growing: some varieties ready in just 35 days.
Best Turnip Varieties for Lafayette, LA
Consult a Lafayette-area nursery or your state extension office for turnip varieties proven in Zone 8b.
Growing Turnips in Lafayette
Lafayette sits in Zone 8b, with an average last frost of February 1 and first fall frost around December 15 — giving a 317-day frost-free growing season. Cool-season crops like turnip benefit from Lafayette's cooler spring and fall windows, when temperatures stay in the 55–75°F sweet spot that produces the best flavor and least bolting.
In Lafayette's warm climate, turnip works best as a fall, winter, and early-spring crop. Summer heat bolts most cool-season vegetables before they can produce a harvestable head or root. Plan primary plantings in October through February in Lafayette, not April through June.
Lafayette's sandy soils drain fast — Lafayette gardeners should water turnip more frequently (every 2 to 3 days during peak summer) and add generous compost to improve moisture retention. Raised beds with amended soil perform significantly better than in-ground planting in sandy conditions. Target 1 inches of total water per week, split across several irrigation sessions rather than one deep soaking.
Turnip Calendar for Lafayette
| Month | Task |
|---|---|
| Year | Start seeds indoors under grow lights |
| February | Last frost — soil warming, prepare bed |
| January | Direct sow seeds into warm soil |
| February | Expect first harvest window to open |
| October | Start fall crop — transplants or direct sow |
| December | First fall frost — harvest remaining, end of outdoor season |
Turnip Tips for Lafayette Gardeners
- •Thin seedlings to 4-inch spacing when plants are 3 inches tall — crowded turnips produce small woody roots.
- •Both roots AND greens are edible — harvest baby turnip greens 4 weeks after sowing, roots 5–9 weeks.
- •Plant cool-season turnip in Lafayette during October through February — spring plantings bolt before producing a usable crop in warm zones.
Common Turnip Pests in Lafayette
- •Flea Beetle — peaks June–August in Zone 8b (active March–October); tiny black beetles that riddle leaves with holes; row covers protect seedlings.
- •Aphid — peaks June–August in Zone 8b (active March–October); monitor closely during peak season and treat early.
- •Cabbage Root Maggot — peaks June–August in Zone 8b (active March–October); 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 Turnips in Lafayette
In Lafayette's warm climate, Pea and Mint are the most beneficial plants to grow alongside turnip. Pea improves nearby plant health and pest resistance. Keep turnip away from Potato — it competes for nutrients and shares blight diseases. Warm-climate gardeners especially benefit from dense, layered companion plantings that shade soil and reduce water loss.
Frequently Asked Questions
When should I plant turnip in Lafayette, LA?
In Lafayette (Zone 8b), direct sow turnip around January 11–21. Soil must be at 40°F or warmer at 2-inch depth before sowing — cold soil rots the seeds.
What zone is Lafayette, LA for turnip growing?
Lafayette is USDA Zone 8b. For turnip, this means a frost-free growing season of roughly 45 weeks running from February 1 to December 15. Cool-season crops like turnip thrive in this zone with both spring and fall planting windows available.
When is turnip harvest season in Lafayette?
Expect the first turnip harvest in Lafayette around February 15, with harvest continuing through March 12. This is based on 35–60 days from transplant or direct sow. A fall crop planted October 20–30 adds a second harvest around November 24.
How long does it take to grow turnip in Lafayette, LA?
From transplant or direct sow to first harvest, turnip takes 35–60 days in Lafayette's climate. Based on a typical planting date of January 11–21, expect your first harvest around February 15. Lafayette's warm Zone 8b climate tends toward the faster end of this range — warmer soil and longer days accelerate maturity.
What soil does turnip need in Lafayette?
Lafayette's sandy soils drain fast and lose nutrients quickly — a challenge for turnip which prefers steady moisture. Add 4–6 inches of compost annually to improve moisture retention. Water more frequently but with less volume per session, and mulch heavily to reduce evaporation.