Placerville, CA planting zone & frost dates
Placerville is in USDA hardiness zone 9b. The last spring frost usually comes around March 31 and the first fall frost around November 21, for a growing season of about 237 days.
Planting calendar for Placerville
Dates are counted from the average last spring frost (March 31) using the typical timing recommended by U.S. extension services. Warm-season crops go out only after the danger of frost has passed and the soil has warmed.
| Crop | When |
|---|---|
| Tomatoes | Start seeds indoors: Feb 3 – Feb 17 Transplant outdoors: Apr 7 – Apr 14 |
| Peppers | Start seeds indoors: Jan 20 – Feb 3 Transplant outdoors: Apr 14 – Apr 21 |
| Eggplant | Start seeds indoors: Jan 20 – Feb 3 Transplant outdoors: Apr 14 – Apr 21 |
| Broccoli | Start seeds indoors: Jan 20 – Feb 3 Transplant outdoors: Mar 3 – Mar 17 |
| Cabbage | Start seeds indoors: Jan 20 – Feb 3 Transplant outdoors: Mar 3 – Mar 17 |
| Onions (sets) | Plant outdoors: Mar 3 – Mar 17 |
| Peas | Sow outdoors: Feb 17 – Mar 3 |
| Spinach | Sow outdoors: Feb 17 – Mar 3 |
| Lettuce | Sow outdoors: Mar 3 – Mar 17 |
| Carrots | Sow outdoors: Mar 3 – Mar 17 |
| Potatoes | Plant outdoors: Mar 3 – Mar 17 |
| Beans | Sow outdoors: Apr 7 – Apr 14 |
| Sweet corn | Sow outdoors: Apr 7 – Apr 14 |
| Cucumbers | Sow outdoors: Apr 7 – Apr 14 |
| Squash & zucchini | Sow outdoors: Apr 7 – Apr 14 |
| Basil | Start seeds indoors: Feb 17 – Mar 3 Transplant outdoors: Apr 7 – Apr 14 |
Fall garden: cool-season crops like lettuce, spinach and kale can be sown again around Sep 26 (8 weeks before the average first fall frost on Nov 21).
Useful for zone 9b gardens
- Seed starting kit with dome — to start seeds indoors before the last frost
- LED grow light for seedlings — stops leggy seedlings
- Frost cloth / plant covers — for late spring and early fall frosts
- Soil thermometer — warm-season crops need soil above 60°F
- Shade cloth — for hot summers
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Frost risk in detail
| 90% chance | 50% chance | 10% chance | |
|---|---|---|---|
| Last 32°F frost in spring is after | Feb 24 | Mar 31 | Apr 23 |
| First 32°F frost in fall is before | Dec 7 | Nov 21 | Nov 1 |
How to read it: in spring there is a 10% chance of a frost after April 23, so that is a safe date for tender plants. In fall there is a 10% chance of frost before November 1. A hard freeze (28°F) usually ends around February 15.
Hardiness zone by ZIP code in Placerville
- 95667 zone 9b
Nearby cities
- Diamond Springs zone 9b, last frost Mar 31
- Cameron Park zone 9b, last frost Mar 31
- El Dorado Hills zone 9b, last frost Feb 25
- Auburn zone 9b, last frost Feb 25
- North Auburn zone 9b, last frost Feb 25
- Granite Bay zone 9b, last frost Feb 25
- Folsom zone 9b, last frost Jan 12
- Orangevale zone 9b, last frost Jan 12
Questions
What growing zone is Placerville, CA?
Placerville is in USDA Plant Hardiness Zone 9b (average extreme winter low 25°F to 30°F), according to the USDA 2023 map.
When is the last frost in Placerville?
The average last spring frost (32°F) in Placerville is March 31. There is still a 10% chance of frost until April 23.
When can I plant tomatoes in Placerville?
Transplant tomatoes outdoors 1–2 weeks after the average last frost: around Apr 7 – Apr 14. Start seeds indoors 6–8 weeks before the last frost.
Frost dates: NOAA U.S. Climate Normals 1991–2020, station Placerville, CA (USC00046960), 4.4 km (2.7 mi) from the city center, elevation 564 m, based on 17 years of records. Hardiness zone: USDA Plant Hardiness Zone Map 2023 for the ZIP code nearest to the city center. Microclimates (valleys, hills, cities, coasts) can be warmer or colder: check the local forecast before planting. How we calculate the data.