When to plant in Marrero, LA
USDA Zone 9bMarrero, Louisiana frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
Marrero's growing season is short at roughly -22 days, so succession planting is limited; lean on transplants over direct sowing for anything slow to mature. In zone 9b, frost is a minor factor for Marrero — most perennials thrive, and annual vegetables can go out early and stay late.
The average last spring frost in Marrero is now 7 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
NEW ORLEANS AUDUBON · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Marrero’s own odds, recorded at NEW ORLEANS AUDUBON.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Mar 7 | Feb 6 | Jan 11 | Nov 19 | Dec 16 | Jan 15 |
| 32°F | Feb 23 | Jan 24 | Dec 28 | Dec 5 | Jan 2 | Feb 1 |
| 28°F | Feb 8 | Jan 15 | Dec 29 | Dec 22 | Jan 8 | Feb 1 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Nothing new to sow or transplant outdoors in the next few weeks — a seasonal lull. Check the full-year calendar below for the next window.
Full-year planting calendar
Each bar is the exact window to take a planting action in Marrero, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 11 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Marrero planting FAQ
When is the last spring frost in Marrero, LA?
On average, the last spring frost in Marrero is around January 24 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in Marrero, LA?
Expect Marrero's first fall frost near January 2 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Marrero in?
Marrero is in USDA hardiness zone 9b. In zone 9b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Marrero?
Marrero has about -22 frost-free days — a short growing season — between the average last spring frost (January 24) and first fall frost (January 2).
When should I plant tomatoes in Marrero?
For Marrero, sow tomatoes indoors about November 29–December 13 and move the seedlings out around January 31, after the last spring frost.
Never miss a window in Marrero
An email when it’s time to start seeds, transplant, and sow — timed to Marrero’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Harvey · 5 km
- Estelle · 5 km
- Woodmere · 6 km
- Gretna · 7 km
- Timberlane · 8 km
- Terrytown · 8 km
- Belle Chasse · 11 km
- Waggaman · 13 km
Frost dates recorded at NEW ORLEANS AUDUBON, 4 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Marrero, LA — Frost Dates & Zone 9b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00012930. Retrieved from https://blissgarden.com/louisiana/marrero.