USDA Hardiness Zone 8a
Frost Dates for 72058 — Greenbrier, Arkansas
Averages from Greenbrier, Ar US, the nearest reporting station, 0.7 miles away.
Plant tender crops after April 9, and expect the first autumn freeze around October 25. That leaves about 198 frost-free days.
- Last spring frost
- April 9
- First fall frost
- October 25
- Growing season
- 198 days
- Hardiness zone
- 8a
50% probability
50% probability
frost-free
10 to 15°F annual low
Planting calendar for 72058
| When | What to do |
|---|---|
| January 29 – February 12 | Start peppers and aubergines indoors They need eight to ten weeks under lights before they can go out. |
| February 12 – February 26 | Start tomatoes indoors Six to eight weeks gives a transplant big enough to set fruit early. |
| March 12 – March 26 | Sow peas, spinach, lettuce, radish outdoors These tolerate light frost and prefer to germinate in cool soil. |
| April 9 onward | Transplant tomatoes, peppers, basil, squash, cucumbers The average last freeze has passed — still watch the actual forecast. |
| by August 2 | Sow the autumn crop of carrots, beets and brassicas They need about twelve weeks to size up before growth stops. |
| by October 11 | Harvest tender crops, or be ready to cover them A first freeze two weeks early is well within normal variation. |
| October 25 onward | Plant garlic, mulch beds, lift tender bulbs Garlic wants a cold spell; bare soil loses structure over winter. |
What these dates mean
Wait until after April 9 to put tender plants — tomatoes, peppers, basil, squash — in the ground. That is the date by which half of years in Greenbrier, Arkansas are past their last freeze. Harvest before October 25, which leaves roughly 198 frost-free days.
ZIP 72058 sits in USDA hardiness zone 8a, meaning the average coldest night of the year falls between 10 to 15°F. Zone decides what survives the winter; frost dates decide when to plant each spring. They are different questions, and a plant can pass one and fail the other.
These are thirty-year NOAA averages for 1991–2020, not a forecast. Any individual year can frost two to three weeks either side of these dates, so check the actual forecast before planting out.