Moskowite Corner, CA planting calendar
- USDA zone
- 9b25 to 30 °F
- Last frost
- Mar 6avg, 32°F
- First frost
- Nov 30avg, 32°F
- Growing season
- 266days
Moskowite Corner, California is in USDA plant hardiness zone 9b. Its average last spring frost is around March 6 and the first fall frost around November 30, giving a growing season of about 266 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.
Moskowite Corner planting calendar
Each crop's windows are counted from Moskowite Corner'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 | Jan 9 – Jan 23 | Mar 13 – Mar 20 | May 12 – Jun 1 | — |
| Pepper | Very tender | Jan 1 – Jan 9 | Mar 20 – Mar 27 | May 19 – Jun 18 | — |
| Cucumber | Tender | Feb 6 – Feb 13 | Mar 13 – Mar 20 | May 2 – May 22 | — |
| Summer squash / zucchini | Tender | — | Mar 13 – Mar 20 | Apr 27 – May 12 | — |
| Bush bean | Tender | — | Mar 13 – Mar 20 | May 2 – May 12 | Oct 1 – Oct 11 |
| Sweet corn | Tender | — | Mar 6 – Mar 20 | May 5 – Jun 4 | — |
| Basil | Very tender | Jan 23 – Feb 6 | Mar 13 – Mar 20 | Apr 12 – Apr 27 | — |
| Lettuce | Half-hardy | Jan 23 – Feb 6 | Feb 6 – Feb 20 | Mar 23 – Apr 7 | Sep 17 – Oct 2 |
| Pea | Hardy | — | Jan 23 – Feb 6 | Mar 19 – Apr 3 | Sep 7 – Sep 22 |
| Spinach | Hardy | — | Jan 23 – Feb 6 | Mar 4 – Mar 14 | Sep 27 – Oct 7 |
| Carrot | Half-hardy | — | Feb 13 – Feb 20 | Apr 14 – May 4 | Aug 28 – Sep 17 |
| Broccoli | Half-hardy | Jan 9 – Jan 23 | Feb 6 – Feb 20 | Apr 2 – Apr 22 | Sep 2 – Sep 22 |
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 USC00045360. 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 9 | Apr 27 | Nov 12 | Nov 26 | 215 |
| 32°F (freeze) | Mar 6 | Apr 6 | Nov 30 | Dec 19 | 266 |
| 28°F | Jan 22 | Feb 26 | Dec 15 | Jan 19 | 330 |
| 24°F | Dec 31 | Jan 25 | Dec 26 | Jan 19 | 365 |
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) | 4,273 | standard warm-season base (tomato, corn, beans) |
| Base 40°F (cool-season) | 7,569 | cool-season crops (brassicas, greens) |
Hardiness zone 9b
Moskowite Corner sits in USDA plant hardiness zone 9b on the 2023 map — meaning its average annual extreme minimum winter temperature is about 25 to 30 °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 9b, or see all USDA hardiness zones.
Frequently asked questions
- What USDA hardiness zone is Moskowite Corner?
- Moskowite Corner, California is in USDA plant hardiness zone 9b on the 2023 map (average annual extreme minimum temperature 25 to 30 °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 Moskowite Corner?
- The average (median) last spring frost at 32°F is around March 6, 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 6, so wait until then before setting out frost-tender plants if you want to be safe.
- When is the first fall frost in Moskowite Corner?
- The average first fall frost at 32°F is around November 30. That leaves a growing season of about 266 days between the average last spring and first fall frosts.
- When should I start tomatoes in Moskowite Corner?
- Start tomato seeds indoors about Jan 9 – Jan 23 and transplant them outside about Mar 13 – Mar 20, once the danger of frost has passed. Estimated first harvest is around May 12 – Jun 1.
- How long is the growing season in Moskowite Corner?
- About 266 days at the 32°F threshold (NOAA 1991–2020, median) — the span between the average last spring frost (~March 6) and the average first fall frost (~November 30). 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 USC00045360 (Markley Cove, 12.7 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.