USDA zone 8a in Nevada
USDA plant hardiness zone 8a covers 3 locations across Nevada (average annual extreme minimum 10 to 15 °F): Alamo, NV, Beatty, NV, Indian Springs, NV. Average last spring frost across this group ranges March 22 (Indian Springs) to April 20 (Alamo), and growing seasons run 188–229 days (Alamo to Indian Springs) — even within one state, because hardiness sets winter survival, not planting dates. The table below gives every Nevada location's own frost dates; the printable planting calendar uses Beatty, this group's median-season location.
- USDA zone
- 8a10 to 15 °F
- Last frost range
- Mar 22–Apr 20avg, 32°F
- First frost range
- Oct 26–Nov 7avg, 32°F
- Growing season range
- 188–229days
Locations in this group
Every location below shares this zone and a nearby weather station, but keeps its own frost dates — find your town for its own numbers, or use the ZIP planner on the home page for an instant personalized answer.
| Location | Also covers | Nearest station | Last frost | First frost | Season (days) |
|---|---|---|---|---|---|
| Alamo | — | Hiko | Apr 20 | Oct 26 | 188 |
| Beatty * | — | Beatty 8 N | Apr 12 | Nov 3 | 204 |
| Indian Springs | — | Desert Nwr | Mar 22 | Nov 7 | 229 |
* Beatty is this group's median-season location — the calendar below is computed from its data.
Data: NOAA NCEI U.S. Climate Normals 1991–2020 (public domain) and USDA Plant Hardiness Zone Map 2023. Planting windows synthesized from U.S. Cooperative Extension guides.
Planting calendar (Beatty, representative)
Computed from Beatty's average frost dates — the median-season location in this Nevadazone 8a group. hatched = start seeds indoors, solid green = plant out, teal = a fall sowing, and the terracotta dot marks the estimated first harvest. Ranges are extension-guide planning guidance, not guarantees — your own location's dates may run a week or two earlier or later (see the table above).
- Start indoors
- Plant out
- Fall sowing
- First harvest
| Crop | Frost tolerance | Start indoors | Plant out | First harvest | Fall planting | Season fit |
|---|---|---|---|---|---|---|
| Tomato | Tender | Feb 15 – Mar 1 | Apr 19 – Apr 26 | Jun 18 – Jul 8 | — | matures comfortably |
| Pepper | Very tender | Feb 1 – Feb 15 | Apr 26 – May 3 | Jun 25 – Jul 25 | — | matures comfortably |
| Cucumber | Tender | Mar 15 – Mar 22 | Apr 19 – Apr 26 | Jun 8 – Jun 28 | — | matures comfortably |
| Summer squash / zucchini | Tender | — | Apr 19 – Apr 26 | Jun 3 – Jun 18 | — | matures comfortably |
| Bush bean | Tender | — | Apr 19 – Apr 26 | Jun 8 – Jun 18 | Sep 4 – Sep 14 | matures comfortably |
| Sweet corn | Tender | — | Apr 12 – Apr 26 | Jun 11 – Jul 11 | — | matures comfortably |
| Basil | Very tender | Mar 1 – Mar 15 | Apr 19 – Apr 26 | May 19 – Jun 3 | — | matures comfortably |
| Lettuce | Half-hardy | Mar 1 – Mar 15 | Mar 15 – Mar 29 | Apr 29 – May 14 | Aug 21 – Sep 5 | matures comfortably |
| Pea | Hardy | — | Mar 1 – Mar 15 | Apr 25 – May 10 | Aug 11 – Aug 26 | matures comfortably |
| Spinach | Hardy | — | Mar 1 – Mar 15 | Apr 10 – Apr 20 | Aug 31 – Sep 10 | matures comfortably |
| Carrot | Half-hardy | — | Mar 22 – Mar 29 | May 21 – Jun 10 | Aug 1 – Aug 21 | matures comfortably |
| Broccoli | Half-hardy | Feb 15 – Mar 1 | Mar 15 – Mar 29 | May 9 – May 29 | Aug 6 – Aug 26 | matures comfortably |
Which crops fit this growing season
Using Beatty's own 204-day growing season (32°F, NOAA 1991–2020 median) against each crop's real days-to-maturity range: 12 of 12 crops mature here with comfortable margin. A different location in the table above with a longer or shorter season will get a different mix — the ZIP planner on the home page gives your own.
Frost & freeze dates (Beatty)
From NOAA's 1991–2020 Climate Normals at station USC00260718. The median (p50) is the average date; the 90%-safe column is the date the freeze has passed in about 9 years out of 10 — the conservative date to plant after or harvest before.
| Threshold | Last spring — avg | Last spring — 90%-safe | First fall — avg | First fall — 90%-safe | Season (days) |
|---|---|---|---|---|---|
| 36°F | Apr 28 | May 22 | Oct 23 | Nov 7 | 177 |
| 32°F (freeze) | Apr 12 | Apr 30 | Nov 3 | Nov 16 | 204 |
| 28°F | Mar 27 | Apr 15 | Nov 13 | Nov 27 | 231 |
| 24°F | Feb 28 | Apr 2 | Nov 23 | Dec 9 | 264 |
Growing degree days
Growing degree days (GDD) accumulate warmth above a base temperature over the year — a better predictor of crop development than the calendar alone. This group's median GDD (base 50°F) across all 3 locations is 4,506; Beatty's own reading is shown below.
| Model | °F·days | Used for |
|---|---|---|
| Base 50°F (warm-season) | 4,506 | standard warm-season base (tomato, corn, beans) |
| Base 40°F (cool-season) | 7,412 | cool-season crops (brassicas, greens) |
Hardiness zone 8a in Nevada
Zone 8a means an average annual extreme minimum winter temperature of about 10 to 15 °F on the USDA's 2023 map — the number that tells you which perennials, shrubs, and trees reliably survive an average winter here. It does not set your planting dates, which come from the frost calendar above. Nevada spans 10 hardiness zones in this dataset — see all Nevada locations for the full range, including zones5a, 5b, 6a, 6b, 7a, 7b, 8b, 9a, 9b.
Explore zone 8a in other states at zone 8a, or see all USDA hardiness zones.
Frequently asked questions
- What does USDA hardiness zone 8a mean in Nevada?
- Zone 8a means an average annual extreme minimum winter temperature of 10 to 15 °F — the standard USDA measure of which perennials survive winter. 3 locations in Nevada fall in this zone. It does not set planting dates; see the frost calendar below for that.
- Where in Nevada's zone 8a is the growing season longest?
- Indian Springs runs the longest season on this page at about 229 days; Alamo is shortest at about 188 days — they share the same hardiness zone, but they sit at different weather stations, so their frost calendars differ.
- When should I plant tomatoes in Nevada's zone 8a?
- Using Beatty's frost dates (this page's median-season location): start seeds indoors about Feb 15 – Mar 1, then transplant outside about Apr 19 – Apr 26. Your own location in the table above may differ by a week or two — use the ZIP planner on the home page for your exact station's dates.
- Does every location in Nevada's zone 8a have the same frost dates?
- No — they do not all share a weather station, so frost dates vary by a week or more across the 3 locations listed (see the table above for each location's own dates).
Sources & method
Frost, freeze, growing-season, and growing-degree-day figures are NOAA NCEI U.S. Climate Normals 1991–2020, one reading per location's own nearest station (see the table above). The hardiness zone is the USDA Plant Hardiness Zone Map 2023, matched to each location's ZIP. Planting windows are computed by counting from the average last and first frost using per-crop offsets synthesized from U.S. Cooperative Extension guides — the full method and citations are on the methodology page.