When to Plant Potatoes in Terrebonne Parish, LA
Potatoes are a versatile staple crop that produces tubers underground. They come in hundreds of varieties with varying colors, textures, and maturity dates.
Terrebonne Parish, Louisiana is in USDA Zone 9a. The average last spring frost is February 7 and the first fall frost is December 8, giving you a growing season of approximately 304 days.
At an elevation of 484 feet, Terrebonne Parish receives approximately 61.9 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 102°F, so Potatoes may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Potatoes will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Potatoes root diseases.
Terrebonne Parish Soil Profile
Soil Type
Sandy Loam
Soil pH
5.1-6.4
Drainage
Well Drained
Plant Planting Risk Windows
Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.
Plant Water Budget
Potatoes Planting Timeline — Terrebonne Parish, LA
Potatoes Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | December 27 | Dec 27 – Jan 10 |
| Transplant Outdoors | February 14 | Feb 14 – Feb 28 |
| Direct Sow | February 7 | Feb 7 – Feb 28 |
| Harvest | April 25 | Apr 25 – Jul 4 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors |
| February | Transplant Outdoors Direct Sow |
| March | — |
| April | Harvest |
| May | Harvest |
| June | Harvest |
| July | Harvest |
| August | — |
| September | — |
| October | — |
| November | — |
| December | Start Indoors |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
Moderate — regular watering
Days to Maturity
70–120 days
Soil pH
5 – 6.5
USDA Zone
Zone 9a
Growing Season
304 days
Growing Tips for Terrebonne Parish
Plant seed potatoes (not grocery store potatoes) 4 inches deep in spring. Hill soil around stems as plants grow to prevent greening. Stop watering when plants die back.
Companion Planting
Good Companions
Avoid Planting Near
Level Up Your Garden
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Frequently Asked Questions
When should I plant Potatoes in Terrebonne Parish, LA?
Terrebonne Parish is in Zone 9a with an average last frost of February 7. Plan your Potatoes planting based on this frost date — see the calendar above for exact timing.
What planting zone is Terrebonne Parish, LA?
Terrebonne Parish, Louisiana is in USDA Hardiness Zone 9a. The average last spring frost is February 7 and first fall frost is December 8.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Terrebonne Parish gardeners in Zone 9a organize planting dates, track what's growing, and never miss a planting window.
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