When to plant in Jasper, AL
USDA Zone 8aEverything below — frost dates, hardiness zone, and what to plant when in Jasper, Alabama — is derived from the closest NOAA station with complete climate normals.
Zone 8a means many perennials and even some tender shrubs overwinter in Jasper, while your frost dates still decide when annuals go out.
The average last spring frost in Jasper is now 9 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
JASPER · 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 Jasper’s own odds, recorded at JASPER.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 29 | Apr 11 | Mar 26 | Oct 14 | Oct 25 | Nov 6 |
| 32°F | Apr 16 | Mar 30 | Mar 10 | Oct 22 | Nov 4 | Nov 19 |
| 28°F | Apr 3 | Mar 14 | Feb 24 | Nov 1 | Nov 15 | Dec 4 |
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 Jasper, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 46 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.
Jasper planting FAQ
When is the last spring frost in Jasper, AL?
Plan for the last spring frost in Jasper around March 30 (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 Jasper, AL?
The first fall frost in Jasper typically arrives around November 4 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Jasper in?
Jasper is in USDA hardiness zone 8a. In zone 8a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Jasper?
There are roughly 219 frost-free days in Jasper (a long growing season), running from the average last frost around March 30 to the first fall frost near November 4.
When should I plant tomatoes in Jasper?
In Jasper, start tomato seeds indoors around February 2–February 16, then transplant seedlings outdoors around April 6 once the danger of frost has passed.
Never miss a window in Jasper
An email when it’s time to start seeds, transplant, and sow — timed to Jasper’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Gardendale · 47 km
- Cullman · 54 km
- Hueytown · 54 km
- Birmingham · 57 km
- Center Point · 59 km
- Bessemer · 60 km
- Homewood · 61 km
- Clay · 63 km
Frost dates recorded at JASPER, 7 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 Jasper, AL — Frost Dates & Zone 8a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00014226. Retrieved from https://blissgarden.com/alabama/jasper.