When to plant in Bayou Blue, LA
USDA Zone 9bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Bayou Blue, Louisiana — all computed from Bayou Blue's nearest NOAA weather station.
With about 315 frost-free days, Bayou Blue supports back-to-back plantings; stagger sowings every few weeks to keep beds productive spring through fall. In zone 9b, frost is a minor factor for Bayou Blue — most perennials thrive, and annual vegetables can go out early and stay late.
Frost probability
HOUMA · 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 Bayou Blue’s own odds, recorded at HOUMA.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Mar 19 | Feb 25 | Jan 29 | Nov 8 | Nov 28 | Dec 22 |
| 32°F | Mar 7 | Feb 5 | Jan 6 | Nov 23 | Dec 17 | Jan 13 |
| 28°F | Feb 24 | Jan 26 | Dec 27 | Dec 7 | Jan 2 | 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 Bayou Blue, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 40 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.
Bayou Blue planting FAQ
When is the last spring frost in Bayou Blue, LA?
On average, the last spring frost in Bayou Blue is around February 5 (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 Bayou Blue, LA?
Expect Bayou Blue's first fall frost near December 17 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Bayou Blue in?
Bayou Blue is in USDA hardiness zone 9b. In zone 9b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Bayou Blue?
Bayou Blue has about 315 frost-free days — a long growing season — between the average last spring frost (February 5) and first fall frost (December 17).
When should I plant tomatoes in Bayou Blue?
For Bayou Blue, sow tomatoes indoors about December 11–December 25 and move the seedlings out around February 12, after the last spring frost.
Never miss a window in Bayou Blue
An email when it’s time to start seeds, transplant, and sow — timed to Bayou Blue’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Houma · 7 km
- Bayou Cane · 8 km
- Thibodaux · 23 km
- Luling · 42 km
- Destrehan · 48 km
- Morgan City · 51 km
- Laplace · 52 km
- Waggaman · 54 km
Frost dates recorded at HOUMA, 14 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 Bayou Blue, LA — Frost Dates & Zone 9b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00164407. Retrieved from https://blissgarden.com/louisiana/bayou-blue.