Jeanerette, LA planting calendar
- USDA zone
- 9b25 to 30 °F
- Last frost
- Feb 15avg, 32°F
- First frost
- Dec 3avg, 32°F
- Growing season
- 294days
Jeanerette, Louisiana is in USDA plant hardiness zone 9b. Its average last spring frost is around February 15 and the first fall frost around December 3, giving a growing season of about 294 days (NOAA 1991–2020 normals, 32°F, median). Start tender crops like tomatoes and peppers indoors weeks before the last frost and set them out afterward; sow hardy crops such as peas, spinach, and lettuce before it. The planner below turns those frost dates into a printable per-crop planting calendar.
Jeanerette planting calendar
Each crop's windows are counted from Jeanerette's average frost dates. hatched = start seeds indoors, solid green = plant out, teal = a fall sowing, and the terracotta dot marks the estimated first harvest. Ranges are extension-guide planning guidance, not guarantees.
- Start indoors
- Plant out
- Fall sowing
- First harvest
| Crop | Frost tolerance | Start indoors | Plant out | First harvest | Fall planting |
|---|---|---|---|---|---|
| Tomato | Tender | Jan 1 – Jan 4 | Feb 22 – Mar 1 | Apr 23 – May 13 | — |
| Pepper | Very tender | Jan 1 | Mar 1 – Mar 8 | Apr 30 – May 30 | — |
| Cucumber | Tender | Jan 18 – Jan 25 | Feb 22 – Mar 1 | Apr 13 – May 3 | — |
| Summer squash / zucchini | Tender | — | Feb 22 – Mar 1 | Apr 8 – Apr 23 | — |
| Bush bean | Tender | — | Feb 22 – Mar 1 | Apr 13 – Apr 23 | Oct 4 – Oct 14 |
| Sweet corn | Tender | — | Feb 15 – Mar 1 | Apr 16 – May 16 | — |
| Basil | Very tender | Jan 4 – Jan 18 | Feb 22 – Mar 1 | Mar 24 – Apr 8 | — |
| Lettuce | Half-hardy | Jan 4 – Jan 18 | Jan 18 – Feb 1 | Mar 4 – Mar 19 | Sep 20 – Oct 5 |
| Pea | Hardy | — | Jan 4 – Jan 18 | Feb 28 – Mar 15 | Sep 10 – Sep 25 |
| Spinach | Hardy | — | Jan 4 – Jan 18 | Feb 13 – Feb 23 | Sep 30 – Oct 10 |
| Carrot | Half-hardy | — | Jan 25 – Feb 1 | Mar 26 – Apr 15 | Aug 31 – Sep 20 |
| Broccoli | Half-hardy | Jan 1 – Jan 4 | Jan 18 – Feb 1 | Mar 14 – Apr 3 | Sep 5 – Sep 25 |
Data: NOAA NCEI U.S. Climate Normals 1991–2020 (public domain) and USDA Plant Hardiness Zone Map 2023. Planting windows synthesized from U.S. Cooperative Extension guides.
Frost & freeze dates
From NOAA's 1991–2020 Climate Normals at station USC00164674. The median (p50) is the average date; the 90%-safe column is the date the freeze has passed in about 9 years out of 10 (p10 for spring, p90 for fall) — the conservative date to plant after or harvest before.
| Threshold | Last spring — avg | Last spring — 90%-safe | First fall — avg | First fall — 90%-safe | Season (days) |
|---|---|---|---|---|---|
| 36°F | Mar 4 | Mar 24 | Nov 19 | Dec 10 | 263 |
| 32°F (freeze) | Feb 15 | Mar 13 | Dec 3 | Jan 4 | 294 |
| 28°F | Jan 29 | Mar 1 | Dec 24 | Jan 26 | 332 |
| 24°F | Jan 17 | Feb 9 | Jan 4 | Feb 1 | 365 |
32°F is the standard "freeze" line that damages tender crops; lighter 36°F frost can nip the most cold-sensitive plants, while hardy crops shrug off light frost down toward 28°F. Use the threshold that matches what you are protecting.
Growing degree days
Growing degree days (GDD) accumulate warmth above a base temperature over the year — a better predictor of crop development than the calendar alone. Warm-season crops need a long, warm GDD total; a short, cool GDD total favors greens and brassicas.
| Model | °F·days | Used for |
|---|---|---|
| Base 50°F (warm-season) | 6,733 | standard warm-season base (tomato, corn, beans) |
| Base 40°F (cool-season) | 10,156 | cool-season crops (brassicas, greens) |
Hardiness zone 9b
Jeanerette sits in USDA plant hardiness zone 9b on the 2023 map — meaning its average annual extreme minimum winter temperature is about 25 to 30 °F. That number tells you which perennials, shrubs, and trees reliably survive an average winter here; it does not set your planting dates, which come from the frost calendar above.
Explore more places in zone 9b, or see all USDA hardiness zones.
Frequently asked questions
- What USDA hardiness zone is Jeanerette?
- Jeanerette, Louisiana is in USDA plant hardiness zone 9b on the 2023 map (average annual extreme minimum temperature 25 to 30 °F) — from the USDA Plant Hardiness Zone Map 2023, matched to this location's ZIP. See the methodology page for sources.
- When is the last frost in Jeanerette?
- The average (median) last spring frost at 32°F is around February 15, from NOAA's 1991–2020 climate normals at the nearest reporting station. Roughly one year in ten the last frost is as late as March 13, so wait until then before setting out frost-tender plants if you want to be safe.
- When is the first fall frost in Jeanerette?
- The average first fall frost at 32°F is around December 3. That leaves a growing season of about 294 days between the average last spring and first fall frosts.
- When should I start tomatoes in Jeanerette?
- Start tomato seeds indoors about Jan 1 – Jan 4 and transplant them outside about Feb 22 – Mar 1, once the danger of frost has passed. Estimated first harvest is around Apr 23 – May 13.
- How long is the growing season in Jeanerette?
- About 294 days at the 32°F threshold (NOAA 1991–2020, median) — the span between the average last spring frost (~February 15) and the average first fall frost (~December 3). Cold-hardy crops extend usable time at both ends; frost-tender crops fit inside it.
Sources & method
Frost, freeze, growing-season, and growing-degree-day figures are NOAA NCEI U.S. Climate Normals 1991–2020 for station USC00164674 (Jeanerette 5 Nw, 8 km away). The hardiness zone is the USDA Plant Hardiness Zone Map 2023, matched to this location's ZIP. Planting windows are computed by counting from the average last and first frost using per-crop offsets synthesized from U.S. Cooperative Extension guides — the full method and citations are on the methodology page.