When to plant in Houma, LA
USDA Zone 9bEverything below — frost dates, hardiness zone, and what to plant when in Houma, Louisiana — is derived from the closest NOAA station with complete climate normals.
A generous ~315-day season lets Houma gardeners direct-sow more and still ripen long-maturity crops like melons and winter squash. Zone 9b is warm enough that Houma can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
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 Houma’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 Houma, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 41 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.
Houma planting FAQ
When is the last spring frost in Houma, LA?
On average, the last spring frost in Houma 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 Houma, LA?
The first fall frost in Houma typically arrives around December 17 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Houma in?
Houma is in USDA hardiness zone 9b. In zone 9b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Houma?
There are roughly 315 frost-free days in Houma (a long growing season), running from the average last frost around February 5 to the first fall frost near December 17.
When should I plant tomatoes in Houma?
In Houma, start tomato seeds indoors around December 11–December 25, then transplant seedlings outdoors around February 12 once the danger of frost has passed.
Never miss a window in Houma
An email when it’s time to start seeds, transplant, and sow — timed to Houma’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Bayou Cane · 7 km
- Bayou Blue · 7 km
- Thibodaux · 26 km
- Morgan City · 49 km
- Luling · 49 km
- Destrehan · 55 km
- Laplace · 59 km
- Waggaman · 61 km
Frost dates recorded at HOUMA, 13 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 Houma, LA — Frost Dates & Zone 9b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00164407. Retrieved from https://blissgarden.com/louisiana/houma.