Aspermont, TX planting calendar
- USDA zone
- 8a10 to 15 °F
- Last frost
- Mar 29avg, 32°F
- First frost
- Nov 7avg, 32°F
- Growing season
- 223days
Aspermont, Texas is in USDA plant hardiness zone 8a. Its average last spring frost is around March 29 and the first fall frost around November 7, giving a growing season of about 223 days (NOAA 1991–2020 normals, 32°F, median). Start tender crops like tomatoes and peppers indoors weeks before the last frost and set them out afterward; sow hardy crops such as peas, spinach, and lettuce before it. The planner below turns those frost dates into a printable per-crop planting calendar.
Aspermont planting calendar
Each crop's windows are counted from Aspermont's average frost dates. 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.
- Start indoors
- Plant out
- Fall sowing
- First harvest
| Crop | Frost tolerance | Start indoors | Plant out | First harvest | Fall planting |
|---|---|---|---|---|---|
| Tomato | Tender | Feb 1 – Feb 15 | Apr 5 – Apr 12 | Jun 4 – Jun 24 | — |
| Pepper | Very tender | Jan 18 – Feb 1 | Apr 12 – Apr 19 | Jun 11 – Jul 11 | — |
| Cucumber | Tender | Mar 1 – Mar 8 | Apr 5 – Apr 12 | May 25 – Jun 14 | — |
| Summer squash / zucchini | Tender | — | Apr 5 – Apr 12 | May 20 – Jun 4 | — |
| Bush bean | Tender | — | Apr 5 – Apr 12 | May 25 – Jun 4 | Sep 8 – Sep 18 |
| Sweet corn | Tender | — | Mar 29 – Apr 12 | May 28 – Jun 27 | — |
| Basil | Very tender | Feb 15 – Mar 1 | Apr 5 – Apr 12 | May 5 – May 20 | — |
| Lettuce | Half-hardy | Feb 15 – Mar 1 | Mar 1 – Mar 15 | Apr 15 – Apr 30 | Aug 25 – Sep 9 |
| Pea | Hardy | — | Feb 15 – Mar 1 | Apr 11 – Apr 26 | Aug 15 – Aug 30 |
| Spinach | Hardy | — | Feb 15 – Mar 1 | Mar 27 – Apr 6 | Sep 4 – Sep 14 |
| Carrot | Half-hardy | — | Mar 8 – Mar 15 | May 7 – May 27 | Aug 5 – Aug 25 |
| Broccoli | Half-hardy | Feb 1 – Feb 15 | Mar 1 – Mar 15 | Apr 25 – May 15 | Aug 10 – Aug 30 |
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.
Frost & freeze dates
From NOAA's 1991–2020 Climate Normals at station USC00410394. 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 (p10 for spring, p90 for fall) — 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 10 | Apr 27 | Oct 30 | Nov 11 | 202 |
| 32°F (freeze) | Mar 29 | Apr 18 | Nov 7 | Nov 24 | 223 |
| 28°F | Mar 14 | Apr 4 | Nov 15 | Dec 4 | 246 |
| 24°F | Mar 2 | Mar 22 | Nov 28 | Dec 17 | 271 |
32°F is the standard "freeze" line that damages tender crops; lighter 36°F frost can nip the most cold-sensitive plants, while hardy crops shrug off light frost down toward 28°F. Use the threshold that matches what you are protecting.
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. Warm-season crops need a long, warm GDD total; a short, cool GDD total favors greens and brassicas.
| Model | °F·days | Used for |
|---|---|---|
| Base 50°F (warm-season) | 5,832 | standard warm-season base (tomato, corn, beans) |
| Base 40°F (cool-season) | 8,865 | cool-season crops (brassicas, greens) |
Hardiness zone 8a
Aspermont sits in USDA plant hardiness zone 8a on the 2023 map — meaning its average annual extreme minimum winter temperature is about 10 to 15 °F. That number 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.
Explore more places in zone 8a, or see all USDA hardiness zones.
Frequently asked questions
- What USDA hardiness zone is Aspermont?
- Aspermont, Texas is in USDA plant hardiness zone 8a on the 2023 map (average annual extreme minimum temperature 10 to 15 °F) — from the USDA Plant Hardiness Zone Map 2023, matched to this location's ZIP. See the methodology page for sources.
- When is the last frost in Aspermont?
- The average (median) last spring frost at 32°F is around March 29, from NOAA's 1991–2020 climate normals at the nearest reporting station. Roughly one year in ten the last frost is as late as April 18, so wait until then before setting out frost-tender plants if you want to be safe.
- When is the first fall frost in Aspermont?
- The average first fall frost at 32°F is around November 7. That leaves a growing season of about 223 days between the average last spring and first fall frosts.
- When should I start tomatoes in Aspermont?
- Start tomato seeds indoors about Feb 1 – Feb 15 and transplant them outside about Apr 5 – Apr 12, once the danger of frost has passed. Estimated first harvest is around Jun 4 – Jun 24.
- How long is the growing season in Aspermont?
- About 223 days at the 32°F threshold (NOAA 1991–2020, median) — the span between the average last spring frost (~March 29) and the average first fall frost (~November 7). Cold-hardy crops extend usable time at both ends; frost-tender crops fit inside it.
Sources & method
Frost, freeze, growing-season, and growing-degree-day figures are NOAA NCEI U.S. Climate Normals 1991–2020 for station USC00410394 (Aspermont, 4.4 km away). The hardiness zone is the USDA Plant Hardiness Zone Map 2023, matched to this 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.