When to plant in Belle Chasse, LA
USDA Zone 9bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Belle Chasse, Louisiana — all computed from Belle Chasse's nearest NOAA weather station.
A generous ~291-day season lets Belle Chasse gardeners direct-sow more and still ripen long-maturity crops like melons and winter squash. Zone 9b is warm enough that Belle Chasse can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
The average first fall frost in Belle Chasse is now 6 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
NEW ORLEANS ALVIN CALLENDER FL · 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 Belle Chasse’s own odds, recorded at NEW ORLEANS ALVIN CALLENDER FL.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Mar 26 | Mar 5 | Feb 8 | Nov 5 | Nov 21 | Dec 13 |
| 32°F | Mar 13 | Feb 18 | Jan 17 | Nov 15 | Dec 6 | Jan 7 |
| 28°F | Mar 1 | Jan 31 | Dec 27 | Nov 30 | Dec 30 | Jan 31 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Belle Chasse, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 10 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.
Belle Chasse planting FAQ
When is the last spring frost in Belle Chasse, LA?
Plan for the last spring frost in Belle Chasse around February 18 (the date it has a 50% chance of a 32°F freeze). Anything frost-sensitive should go out after it.
When is the first fall frost in Belle Chasse, LA?
The first fall frost in Belle Chasse typically arrives around December 6 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Belle Chasse in?
Belle Chasse is in USDA hardiness zone 9b. In zone 9b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Belle Chasse?
There are roughly 291 frost-free days in Belle Chasse (a long growing season), running from the average last frost around February 18 to the first fall frost near December 6.
When should I plant tomatoes in Belle Chasse?
In Belle Chasse, start tomato seeds indoors around December 24–January 7, then transplant seedlings outdoors around February 25 once the danger of frost has passed.
Never miss a window in Belle Chasse
An email when it’s time to start seeds, transplant, and sow — timed to Belle Chasse’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reachFrost dates recorded at NEW ORLEANS ALVIN CALLENDER FL, 5 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 Belle Chasse, LA — Frost Dates & Zone 9b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00012958. Retrieved from https://blissgarden.com/louisiana/belle-chasse.