When to plant in Laplace, LA
USDA Zone 9bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Laplace, Louisiana — all computed from Laplace's nearest NOAA weather station.
With about 308 frost-free days, Laplace supports back-to-back plantings; stagger sowings every few weeks to keep beds productive spring through fall. Zone 9b is warm enough that Laplace can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
The average last spring frost in Laplace is now 5 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
RESERVE · 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 Laplace’s own odds, recorded at RESERVE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Mar 22 | Feb 27 | Feb 1 | Nov 8 | Nov 28 | Dec 22 |
| 32°F | Mar 11 | Feb 9 | Jan 13 | Nov 21 | Dec 14 | Jan 13 |
| 28°F | Feb 26 | Jan 28 | Dec 28 | Dec 2 | Jan 1 | 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 Laplace, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 38 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.
Laplace planting FAQ
When is the last spring frost in Laplace, LA?
On average, the last spring frost in Laplace is around February 9 (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 Laplace, LA?
The first fall frost in Laplace typically arrives around December 14 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Laplace in?
Laplace is in USDA hardiness zone 9b. In zone 9b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Laplace?
There are roughly 308 frost-free days in Laplace (a long growing season), running from the average last frost around February 9 to the first fall frost near December 14.
When should I plant tomatoes in Laplace?
In Laplace, start tomato seeds indoors around December 15–December 29, then transplant seedlings outdoors around February 16 once the danger of frost has passed.
Never miss a window in Laplace
An email when it’s time to start seeds, transplant, and sow — timed to Laplace’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reachFrost dates recorded at RESERVE, 10 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 Laplace, LA — Frost Dates & Zone 9b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00167767. Retrieved from https://blissgarden.com/louisiana/laplace.