When to plant in Picayune, MS
USDA Zone 9aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Picayune, Mississippi — all computed from Picayune's nearest NOAA weather station.
Picayune enjoys a long ~254-day frost-free season — you can succession-sow, fit in a second crop, and grow long-season heat-lovers with room to spare. Zone 9a is warm enough that Picayune can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
The average last spring frost in Picayune is now 5 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
PICAYUNE · 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 Picayune’s own odds, recorded at PICAYUNE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 16 | Mar 26 | Mar 3 | Oct 24 | Nov 7 | Nov 27 |
| 32°F | Mar 31 | Mar 9 | Feb 17 | Nov 3 | Nov 18 | Dec 11 |
| 28°F | Mar 16 | Feb 24 | Jan 27 | Nov 11 | Dec 3 | Jan 7 |
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 Picayune, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 25 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.
Picayune planting FAQ
When is the last spring frost in Picayune, MS?
On average, the last spring frost in Picayune is around March 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 Picayune, MS?
The first fall frost in Picayune typically arrives around November 18 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Picayune in?
Picayune is in USDA hardiness zone 9a. In zone 9a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Picayune?
There are roughly 254 frost-free days in Picayune (a long growing season), running from the average last frost around March 9 to the first fall frost near November 18.
When should I plant tomatoes in Picayune?
In Picayune, start tomato seeds indoors around January 12–January 26, then transplant seedlings outdoors around March 16 once the danger of frost has passed.
Never miss a window in Picayune
An email when it’s time to start seeds, transplant, and sow — timed to Picayune’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Slidell · 29 km
- Bogalusa · 33 km
- Bay St. Louis · 38 km
- Covington · 43 km
- Mandeville · 45 km
- Long Beach · 52 km
- New Orleans · 59 km
- Gulfport · 59 km
Frost dates recorded at PICAYUNE, 3 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 Picayune, MS — Frost Dates & Zone 9a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00226921. Retrieved from https://blissgarden.com/mississippi/picayune.