When to plant in Arkadelphia, AR
USDA Zone 8aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Arkadelphia, Arkansas — all computed from Arkadelphia's nearest NOAA weather station.
Zone 8a means many perennials and even some tender shrubs overwinter in Arkadelphia, while your frost dates still decide when annuals go out.
The average last spring frost in Arkadelphia is now 6 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
ARKADELPHIA 2 N · 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 Arkadelphia’s own odds, recorded at ARKADELPHIA 2 N.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 23 | Apr 6 | Mar 21 | Oct 15 | Oct 27 | Nov 9 |
| 32°F | Apr 11 | Mar 26 | Mar 6 | Oct 23 | Nov 4 | Nov 21 |
| 28°F | Mar 30 | Mar 11 | Feb 22 | Nov 1 | Nov 16 | Dec 5 |
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 Arkadelphia, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 18 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.
Arkadelphia planting FAQ
When is the last spring frost in Arkadelphia, AR?
Arkadelphia's average last spring frost falls near March 26 — the 50% mark at 32°F in the 1991–2020 normals. Hold tender transplants until the risk has passed, then plant out.
When is the first fall frost in Arkadelphia, AR?
Expect Arkadelphia's first fall frost near November 4 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Arkadelphia in?
Arkadelphia is in USDA hardiness zone 8a. In zone 8a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Arkadelphia?
There are roughly 223 frost-free days in Arkadelphia (a long growing season), running from the average last frost around March 26 to the first fall frost near November 4.
When should I plant tomatoes in Arkadelphia?
In Arkadelphia, start tomato seeds indoors around January 29–February 12, then transplant seedlings outdoors around April 2 once the danger of frost has passed.
Never miss a window in Arkadelphia
An email when it’s time to start seeds, transplant, and sow — timed to Arkadelphia’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Malvern · 36 km
- Hot Springs · 40 km
- Hot Springs Village · 60 km
- Camden · 66 km
- Benton · 68 km
- Bryant · 76 km
- Little Rock · 93 km
- Magnolia · 96 km
Frost dates recorded at ARKADELPHIA 2 N, 2 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 Arkadelphia, AR — Frost Dates & Zone 8a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00030220. Retrieved from https://blissgarden.com/arkansas/arkadelphia.