Destrehan, LA planting zone & frost dates
Destrehan is in USDA hardiness zone 9b. The last spring frost usually comes around January 30 and the first fall frost around December 31, for a growing season of about 333 days.
Planting calendar for Destrehan
Dates are counted from the average last spring frost (January 30) using the typical timing recommended by U.S. extension services. Warm-season crops go out only after the danger of frost has passed and the soil has warmed.
| Crop | When |
|---|---|
| Tomatoes | Start seeds indoors: Dec 5 – Dec 19 Transplant outdoors: Feb 6 – Feb 13 |
| Peppers | Start seeds indoors: Nov 21 – Dec 5 Transplant outdoors: Feb 13 – Feb 20 |
| Eggplant | Start seeds indoors: Nov 21 – Dec 5 Transplant outdoors: Feb 13 – Feb 20 |
| Broccoli | Start seeds indoors: Nov 21 – Dec 5 Transplant outdoors: Jan 2 – Jan 16 |
| Cabbage | Start seeds indoors: Nov 21 – Dec 5 Transplant outdoors: Jan 2 – Jan 16 |
| Onions (sets) | Plant outdoors: Jan 2 – Jan 16 |
| Peas | Sow outdoors: Dec 19 – Jan 2 |
| Spinach | Sow outdoors: Dec 19 – Jan 2 |
| Lettuce | Sow outdoors: Jan 2 – Jan 16 |
| Carrots | Sow outdoors: Jan 2 – Jan 16 |
| Potatoes | Plant outdoors: Jan 2 – Jan 16 |
| Beans | Sow outdoors: Feb 6 – Feb 13 |
| Sweet corn | Sow outdoors: Feb 6 – Feb 13 |
| Cucumbers | Sow outdoors: Feb 6 – Feb 13 |
| Squash & zucchini | Sow outdoors: Feb 6 – Feb 13 |
| Basil | Start seeds indoors: Dec 19 – Jan 2 Transplant outdoors: Feb 6 – Feb 13 |
Fall garden: cool-season crops like lettuce, spinach and kale can be sown again around Nov 5 (8 weeks before the average first fall frost on Dec 31).
Useful for zone 9b gardens
- Seed starting kit with dome — to start seeds indoors before the last frost
- LED grow light for seedlings — stops leggy seedlings
- Frost cloth / plant covers — for late spring and early fall frosts
- Soil thermometer — warm-season crops need soil above 60°F
- Shade cloth — for hot summers
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Frost risk in detail
| 90% chance | 50% chance | 10% chance | |
|---|---|---|---|
| Last 32°F frost in spring is after | Dec 29 | Jan 30 | Feb 27 |
| First 32°F frost in fall is before | Jan 31 | Dec 31 | Dec 1 |
How to read it: in spring there is a 10% chance of a frost after February 27, so that is a safe date for tender plants. In fall there is a 10% chance of frost before December 1. A hard freeze (28°F) usually ends around January 20.
Hardiness zone by ZIP code in Destrehan
- 70047 zone 9b
Nearby cities
- Luling zone 9b, last frost Jan 30
- Kenner zone 9b, last frost Jan 30
- River Ridge zone 9b, last frost Jan 30
- Waggaman zone 9b, last frost Jan 24
- Laplace zone 9b, last frost Feb 9
- Jefferson zone 9b, last frost Jan 24
- Metairie zone 9b, last frost Jan 24
- Bayou Boeuf zone 9b, last frost Feb 9
Questions
What growing zone is Destrehan, LA?
Destrehan is in USDA Plant Hardiness Zone 9b (average extreme winter low 25°F to 30°F), according to the USDA 2023 map.
When is the last frost in Destrehan?
The average last spring frost (32°F) in Destrehan is January 30. There is still a 10% chance of frost until February 27.
When can I plant tomatoes in Destrehan?
Transplant tomatoes outdoors 1–2 weeks after the average last frost: around Feb 6 – Feb 13. Start seeds indoors 6–8 weeks before the last frost.
Frost dates: NOAA U.S. Climate Normals 1991–2020, station New Orleans Intl Ap, LA (USW00012916), 11.3 km (7.0 mi) from the city center, elevation 1 m, based on 25 years of records. Hardiness zone: USDA Plant Hardiness Zone Map 2023 for the ZIP code nearest to the city center. Microclimates (valleys, hills, cities, coasts) can be warmer or colder: check the local forecast before planting. How we calculate the data.