Frost Dates for Greenfield, CA 93927
Last spring frost March 18 · First fall frost November 10 · 237 frost-free days · USDA Zone 9b
ZIP 93927 has about 21,600 people.
Long season: 237 frost-free days. Spring frost risk spans March 20–April 28 (39 days). Fall frost risk spans October 20–November 20 (31 days).
Frost probability for 93927
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | April 28 | March 18 | March 20 |
| Fall (first frost) | October 20 | November 10 | November 20 |
Dates come from NOAA 1971–2000 freeze probabilities at KING CITY (22.8 km away); the 50% date is the median year.
Which crops fit a 237-day season in Greenfield
In Greenfield (237 frost-free days, a long season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.
| Crop | Start indoors | Plant out / sow | Days you have | Verdict | Last sow date |
|---|---|---|---|---|---|
| Tomato | Feb 11 | Apr 1–Apr 8 | 195 | fits: 80 days to maturity, 195 available after Apr 1. | Jul 11 |
| Pepper | Feb 4 | Apr 1–Apr 8 | 195 | fits: 75 days to maturity, 195 available after Apr 1. | Jul 16 |
| Lettuce | Jan 21 | Feb 18–Feb 25 | 272 | two-plantings: Plant Feb 18 and again by Sep 19; both mature before Nov 17. | Sep 19 |
| Carrots | — | Feb 25–Mar 4 | 279 | fits: 70 days to maturity, 279 available after Feb 25. | Sep 8 |
| Cucumber | Feb 25 | Apr 1–Apr 8 | 209 | two-plantings: Plant Apr 1 and again by Aug 14; both mature before Oct 27. | Aug 14 |
| Beans | — | Mar 25–Apr 8 | 223 | two-plantings: Plant Mar 25 and again by Aug 21; both mature before Nov 3. | Aug 21 |
| Peas | — | Jan 21–Apr 1 | 300 | fits: 65 days to maturity, 300 available after Jan 21. | Aug 30 |
| Zucchini | Mar 4 | Apr 1–Apr 8 | 209 | two-plantings: Plant Apr 1 and again by Aug 19; both mature before Oct 27. | Aug 19 |
| Onion | Dec 24 | Feb 18–Mar 4 | 272 | fits: 100 days to maturity, 272 available after Feb 18. | — |
| Spinach | — | Jan 21–Mar 11 | 314 | two-plantings: Plant Jan 21 and again by Oct 8; both mature before Dec 1. | Oct 8 |
| Kale | Jan 7 | Feb 18–Mar 4 | 286 | two-plantings: Plant Feb 18 and again by Sep 23; both mature before Dec 1. | Sep 23 |
| Broccoli | Jan 21 | Feb 18–Mar 4 | 272 | fits: 80 days to maturity, 272 available after Feb 18. | Aug 15 |
| Cabbage | Jan 21 | Feb 18–Mar 4 | 286 | fits: 70 days to maturity, 286 available after Feb 18. | Sep 8 |
| Radish | — | Jan 21–Apr 15 | 300 | two-plantings: Plant Jan 21 and again by Oct 9; both mature before Nov 17. | Oct 9 |
| Beets | — | Jan 21–Apr 15 | 300 | two-plantings: Plant Jan 21 and again by Sep 9; both mature before Nov 17. | Sep 9 |
| Potatoes | — | Mar 4–Mar 11 | 258 | fits: 90 days to maturity, 258 available after Mar 4. | — |
| Garlic | — | Nov 10 | 342 | overwinter: Plant Nov 10 to Dec 1; harvest the following summer. | Dec 1 |
| Strawberry | — | Feb 11–Apr 8 | 293 | perennial: A perennial: plant Feb 11; it fruits from the following year and keeps producing for several years. | — |
| Corn | Feb 18 | Mar 25–Apr 1 | 209 | fits: 75 days to maturity, 209 available after Mar 25. | Jul 23 |
| Pumpkin | Mar 4 | Apr 1–Apr 1 | 202 | fits: 100 days to maturity, 202 available after Apr 1. | Jun 28 |
| Cauliflower | Feb 4 | Mar 11–Mar 25 | 251 | fits: 75 days to maturity, 251 available after Mar 11. | Aug 20 |
| Swiss Chard | Jan 21 | Mar 4–Mar 4 | 258 | two-plantings: Plant Mar 4 and again by Sep 9; both mature before Nov 17. | Sep 9 |
| Arugula | — | Jan 21–Apr 15 | 314 | two-plantings: Plant Jan 21 and again by Oct 8; both mature before Dec 1. | Oct 8 |
| Brussel Sprouts | Jan 21 | Feb 18–Mar 4 | 286 | fits: 100 days to maturity, 286 available after Feb 18. | Aug 9 |
| Butternut Squash | Mar 4 | Apr 1–Apr 8 | 202 | fits: 100 days to maturity, 202 available after Apr 1. | Jun 28 |
| Eggplant | Jan 28 | Apr 1–Apr 8 | 195 | fits: 70 days to maturity, 195 available after Apr 1. | Jul 21 |
| Okra | Feb 18 | Mar 25–Apr 1 | 216 | two-plantings: Plant Mar 25 and again by Aug 19; both mature before Oct 27. | Aug 19 |
| Basil | Feb 11 | Apr 8–Apr 8 | 202 | two-plantings: Plant Apr 8 and again by Aug 14; both mature before Oct 27. | Aug 14 |
| Cilantro | — | Feb 18–Mar 11 | 272 | two-plantings: Plant Feb 18 and again by Sep 14; both mature before Nov 17. | Sep 14 |
| Parsley | Jan 7 | Mar 25–Apr 1 | 237 | fits: 70 days to maturity, 237 available after Mar 25. | Aug 25 |
| Celery | Jan 7 | Mar 25–Apr 8 | 237 | fits: 120 days to maturity, 237 available after Mar 25. | Jul 6 |
| Scallions | Jan 7 | Feb 18–Mar 4 | 286 | two-plantings: Plant Feb 18 and again by Sep 18; both mature before Dec 1. | Sep 18 |
| Turnip | — | Feb 18–Mar 4 | 286 | two-plantings: Plant Feb 18 and again by Sep 28; both mature before Dec 1. | Sep 28 |
| Kohlrabi | — | Feb 4–Feb 18 | 300 | two-plantings: Plant Feb 4 and again by Sep 23; both mature before Dec 1. | Sep 23 |
| Bok Choy | Feb 18 | Mar 11–Mar 18 | 251 | two-plantings: Plant Mar 11 and again by Sep 19; both mature before Nov 17. | Sep 19 |
| Collards | Jan 7 | Feb 18–Mar 4 | 286 | two-plantings: Plant Feb 18 and again by Sep 18; both mature before Dec 1. | Sep 18 |
| Cantaloupe | Mar 4 | Apr 1–Apr 8 | 195 | fits: 85 days to maturity, 195 available after Apr 1. | Jul 6 |
| Chives | Dec 24 | Mar 25–Apr 1 | 251 | fits: 90 days to maturity, 251 available after Mar 25. | — |
| Dill | — | Jan 21–Apr 15 | 300 | two-plantings: Plant Jan 21 and again by Sep 9; both mature before Nov 17. | Sep 9 |
| Oregano | Jan 7 | Mar 25–Apr 1 | 251 | fits: 80 days to maturity, 251 available after Mar 25. | — |
| Rosemary | Dec 24 | Mar 25–Apr 1 | 237 | fits: 80 days to maturity, 237 available after Mar 25. | — |
| Sage | Jan 21 | Mar 25–Apr 1 | 251 | fits: 75 days to maturity, 251 available after Mar 25. | — |
| Thyme | Jan 7 | Mar 25–Apr 1 | 251 | fits: 90 days to maturity, 251 available after Mar 25. | — |
| Calendula | Feb 4 | Mar 4–Mar 18 | 258 | two-plantings: Plant Mar 4 and again by Sep 14; both mature before Nov 17. | Sep 14 |
| Cosmos | Feb 18 | Mar 18–Apr 1 | 223 | two-plantings: Plant Mar 18 and again by Aug 14; both mature before Oct 27. | Aug 14 |
| Lavender | Dec 24 | Mar 18–Apr 1 | 258 | fits: 90 days to maturity, 258 available after Mar 18. | — |
| Marigolds | Feb 4 | Mar 18–Mar 25 | 223 | two-plantings: Plant Mar 18 and again by Aug 24; both mature before Oct 27. | Aug 24 |
| Melons | Mar 4 | Apr 1–Apr 8 | 195 | fits: 85 days to maturity, 195 available after Apr 1. | Jul 6 |
| Mint | — | Mar 18–Apr 1 | 258 | fits: 90 days to maturity, 258 available after Mar 18. | — |
| Nasturtiums | Feb 18 | Mar 18–Mar 25 | 223 | two-plantings: Plant Mar 18 and again by Aug 19; both mature before Oct 27. | Aug 19 |
| Pole Beans | — | Mar 25–Apr 8 | 216 | fits: 65 days to maturity, 216 available after Mar 25. | Aug 9 |
| Spaghetti Squash | Mar 4 | Apr 1–Apr 8 | 202 | fits: 90 days to maturity, 202 available after Apr 1. | Jul 8 |
| Sunflowers | — | Mar 18–Apr 1 | 223 | fits: 70 days to maturity, 223 available after Mar 18. | Aug 4 |
| Tomatillos | Jan 21 | Mar 25–Apr 1 | 202 | fits: 75 days to maturity, 202 available after Mar 25. | Jul 16 |
| Watermelon | Mar 4 | Mar 25–Apr 1 | 202 | fits: 80 days to maturity, 202 available after Mar 25. | Jul 11 |
| Yellow Squash | Mar 4 | Apr 1–Apr 8 | 209 | two-plantings: Plant Apr 1 and again by Aug 19; both mature before Oct 27. | Aug 19 |
| Zinnias | Feb 18 | Mar 18–Apr 1 | 223 | two-plantings: Plant Mar 18 and again by Aug 14; both mature before Oct 27. | Aug 14 |
Month by month in Greenfield
| Month | What to do |
|---|---|
| January | Start indoors: Celery (Jan 7), Collards (Jan 7), Kale (Jan 7), Oregano (Jan 7), Parsley (Jan 7), Scallions (Jan 7), +9 more. Direct sow from: Arugula (Jan 21), Beets (Jan 21), Dill (Jan 21), Peas (Jan 21), Radish (Jan 21), Spinach (Jan 21). |
| February | Start indoors: Calendula (Feb 4), Cauliflower (Feb 4), Marigolds (Feb 4), Pepper (Feb 4), Basil (Feb 11), Tomato (Feb 11), +7 more. Direct sow from: Kohlrabi (Feb 4), Cilantro (Feb 18), Turnip (Feb 18), Carrots (Feb 25). Transplant from: Broccoli (Feb 18), Brussel Sprouts (Feb 18), Cabbage (Feb 18), Collards (Feb 18), Kale (Feb 18), Lettuce (Feb 18), +2 more. Plant: Strawberry (Feb 11). |
| March | Start indoors: Butternut Squash (Mar 4), Cantaloupe (Mar 4), Melons (Mar 4), Pumpkin (Mar 4), Spaghetti Squash (Mar 4), Watermelon (Mar 4), +2 more. Direct sow from: Potatoes (Mar 4), Sunflowers (Mar 18), Beans (Mar 25), Pole Beans (Mar 25). Transplant from: Calendula (Mar 4), Swiss Chard (Mar 4), Bok Choy (Mar 11), Cauliflower (Mar 11), Cosmos (Mar 18), Lavender (Mar 18), +15 more. Last frost around March 18. |
| April | Transplant from: Butternut Squash (Apr 1), Cantaloupe (Apr 1), Cucumber (Apr 1), Eggplant (Apr 1), Melons (Apr 1), Pepper (Apr 1), +6 more. |
| May | Succession plant lettuce and greens. Keep beds weeded and watered consistently. |
| June | Last sowing dates: Butternut Squash (Jun 28), Pumpkin (Jun 28). |
| July | Last sowing dates: Cantaloupe (Jul 6), Celery (Jul 6), Melons (Jul 6), Spaghetti Squash (Jul 8), Tomato (Jul 11), Watermelon (Jul 11), +4 more. |
| August | Last sowing dates: Sunflowers (Aug 4), Brussel Sprouts (Aug 9), Pole Beans (Aug 9), Basil (Aug 14), Cosmos (Aug 14), Cucumber (Aug 14), +11 more. |
| September | Last sowing dates: Cabbage (Sep 8), Carrots (Sep 8), Beets (Sep 9), Dill (Sep 9), Swiss Chard (Sep 9), Calendula (Sep 14), +8 more. |
| October | Last sowing dates: Arugula (Oct 8), Spinach (Oct 8), Radish (Oct 9). |
| November | Direct sow from: Garlic (Nov 10). First frost around November 10. |
| December | Start indoors: Chives (Dec 24), Lavender (Dec 24), Onion (Dec 24), Rosemary (Dec 24). Last sowing dates: Garlic (Dec 1). |
Frequently Asked Questions
What is the last frost date for Greenfield, CA (ZIP 93927)?
The median last spring frost date for Greenfield, CA (ZIP code 93927) is around March 18. This is the 50th-percentile date — meaning half of all years see frost end before this date. Use the 10% and 90% dates to understand the full range of risk in your area. One year in ten frost ends before March 20; one in ten it runs past April 28.
What is the first fall frost date in Greenfield, CA?
The median first fall frost date for Greenfield, CA is around November 10. Plan to harvest or protect frost-sensitive crops like tomatoes and peppers at least a week before this date to avoid losses. The first frost arrives around October 20 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Greenfield, CA?
The frost-free growing season in Greenfield is about 237 days. This window — from your last spring frost to your first fall frost — is when warm-season vegetables thrive. Cold-hardy crops like kale, spinach, and peas can extend your season by weeks on either side. In Greenfield (237 frost-free days, a long season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.
What USDA hardiness zone is Greenfield, CA?
Greenfield, CA is in USDA hardiness zone 9b (2023 USDA Plant Hardiness Zone Map). Zones come from the average coldest winter temperature, so they tell you which perennials survive the winter; the frost dates on this page tell you when to plant.
When should I start tomatoes indoors in Greenfield, CA?
Start tomatoes indoors Feb 11 and plant out Apr 1 in Greenfield. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Greenfield?
Two: plant Feb 18 and again by Sep 19; both mature before Nov 17.
When do I plant garlic in Greenfield?
Nov 10 to Dec 1; it overwinters and is ready the following summer.
Can I get two tomato crops in Greenfield?
Yes: plant out Apr 1 for a summer crop, and set out a second round of transplants by Jul 11 for a fall crop.
Which nearby ZIP has a longer season?
Carmel (ZIP 93923) has 322 frost-free days, 85 more than Greenfield (ZIP 93927). See Carmel ZIP 93923 frost dates
Nearby and related
- Frost dates for Soledad, CA 93960 (9.9 mi)
- Frost dates for King City, CA 93930 (17.8 mi)
- Frost dates for Carmel, CA 93923 (25.1 mi)
- Frost dates for Monterey, CA 93940 (29 mi)
- Frost dates for Seaside, CA 93955 (33.5 mi)
- When to plant in CA
- When to plant Peppers in CA
- When to plant Cucumbers in CA
- When to plant Zucchini in CA
- When to plant Butternut Squash in CA
- When to plant Basil in CA
- When to plant Sweet Corn in CA
- Look up another ZIP