Frost Dates for Santa Clarita, CA 91350
Last spring frost March 7 · First fall frost November 29 · 267 frost-free days · USDA Zone 10a
ZIP 91350 has about 44,000 people, the largest of 2 ZIP codes in Santa Clarita.
Very long season: 267 frost-free days. Spring frost risk spans February 2–April 9 (66 days). Fall frost risk spans November 7–December 11 (34 days).
Frost probability for 91350
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | April 9 | March 7 | February 2 |
| Fall (first frost) | November 7 | November 29 | December 11 |
Dates come from NOAA 1971–2000 freeze probabilities at CANOGA PARK PIERCE CLG (28.4 km away); the 50% date is the median year.
Frost dates by ZIP code in Santa Clarita, CA
| ZIP | Last spring frost (50%) | First fall frost (50%) | Zone |
|---|---|---|---|
| 91350 | March 7 | November 29 | 10a |
| 91390 | March 25 | November 23 | 9b |
Which crops fit a 267-day season in Santa Clarita
In Santa Clarita (267 frost-free days, a very 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 | Jan 31 | Mar 21–Mar 28 | 225 | fits: 80 days to maturity, 225 available after Mar 21. | Jul 30 |
| Pepper | Jan 24 | Mar 21–Mar 28 | 225 | fits: 75 days to maturity, 225 available after Mar 21. | Aug 4 |
| Lettuce | Jan 10 | Feb 7–Feb 14 | 302 | two-plantings: Plant Feb 7 and again by Oct 8; both mature before Dec 6. | Oct 8 |
| Carrots | — | Feb 14–Feb 21 | 309 | fits: 70 days to maturity, 309 available after Feb 14. | Sep 27 |
| Cucumber | Feb 14 | Mar 21–Mar 28 | 239 | two-plantings: Plant Mar 21 and again by Sep 2; both mature before Nov 15. | Sep 2 |
| Beans | — | Mar 14–Mar 28 | 253 | two-plantings: Plant Mar 14 and again by Sep 9; both mature before Nov 22. | Sep 9 |
| Peas | — | Jan 10–Mar 21 | 330 | fits: 65 days to maturity, 330 available after Jan 10. | Sep 18 |
| Zucchini | Feb 21 | Mar 21–Mar 28 | 239 | two-plantings: Plant Mar 21 and again by Sep 7; both mature before Nov 15. | Sep 7 |
| Onion | Dec 13 | Feb 7–Feb 21 | 302 | fits: 100 days to maturity, 302 available after Feb 7. | — |
| Spinach | — | Jan 10–Feb 28 | 344 | two-plantings: Plant Jan 10 and again by Oct 27; both mature before Dec 20. | Oct 27 |
| Kale | Dec 27 | Feb 7–Feb 21 | 316 | two-plantings: Plant Feb 7 and again by Oct 12; both mature before Dec 20. | Oct 12 |
| Broccoli | Jan 10 | Feb 7–Feb 21 | 302 | fits: 80 days to maturity, 302 available after Feb 7. | Sep 3 |
| Cabbage | Jan 10 | Feb 7–Feb 21 | 316 | fits: 70 days to maturity, 316 available after Feb 7. | Sep 27 |
| Radish | — | Jan 10–Apr 4 | 330 | two-plantings: Plant Jan 10 and again by Oct 28; both mature before Dec 6. | Oct 28 |
| Beets | — | Jan 10–Apr 4 | 330 | two-plantings: Plant Jan 10 and again by Sep 28; both mature before Dec 6. | Sep 28 |
| Potatoes | — | Feb 21–Feb 28 | 288 | fits: 90 days to maturity, 288 available after Feb 21. | — |
| Garlic | — | Nov 29 | 372 | overwinter: Plant Nov 29 to Dec 20; harvest the following summer. | Dec 20 |
| Strawberry | — | Jan 31–Mar 28 | 323 | perennial: A perennial: plant Jan 31; it fruits from the following year and keeps producing for several years. | — |
| Corn | Feb 7 | Mar 14–Mar 21 | 239 | fits: 75 days to maturity, 239 available after Mar 14. | Aug 11 |
| Pumpkin | Feb 21 | Mar 21–Mar 21 | 232 | fits: 100 days to maturity, 232 available after Mar 21. | Jul 17 |
| Cauliflower | Jan 24 | Feb 28–Mar 14 | 281 | fits: 75 days to maturity, 281 available after Feb 28. | Sep 8 |
| Swiss Chard | Jan 10 | Feb 21–Feb 21 | 288 | two-plantings: Plant Feb 21 and again by Sep 28; both mature before Dec 6. | Sep 28 |
| Arugula | — | Jan 10–Apr 4 | 344 | two-plantings: Plant Jan 10 and again by Oct 27; both mature before Dec 20. | Oct 27 |
| Brussel Sprouts | Jan 10 | Feb 7–Feb 21 | 316 | fits: 100 days to maturity, 316 available after Feb 7. | Aug 28 |
| Butternut Squash | Feb 21 | Mar 21–Mar 28 | 232 | fits: 100 days to maturity, 232 available after Mar 21. | Jul 17 |
| Eggplant | Jan 17 | Mar 21–Mar 28 | 225 | fits: 70 days to maturity, 225 available after Mar 21. | Aug 9 |
| Okra | Feb 7 | Mar 14–Mar 21 | 246 | two-plantings: Plant Mar 14 and again by Sep 7; both mature before Nov 15. | Sep 7 |
| Basil | Jan 31 | Mar 28–Mar 28 | 232 | two-plantings: Plant Mar 28 and again by Sep 2; both mature before Nov 15. | Sep 2 |
| Cilantro | — | Feb 7–Feb 28 | 302 | two-plantings: Plant Feb 7 and again by Oct 3; both mature before Dec 6. | Oct 3 |
| Parsley | Dec 27 | Mar 14–Mar 21 | 267 | fits: 70 days to maturity, 267 available after Mar 14. | Sep 13 |
| Celery | Dec 27 | Mar 14–Mar 28 | 267 | fits: 120 days to maturity, 267 available after Mar 14. | Jul 25 |
| Scallions | Dec 27 | Feb 7–Feb 21 | 316 | two-plantings: Plant Feb 7 and again by Oct 7; both mature before Dec 20. | Oct 7 |
| Turnip | — | Feb 7–Feb 21 | 316 | two-plantings: Plant Feb 7 and again by Oct 17; both mature before Dec 20. | Oct 17 |
| Kohlrabi | — | Jan 24–Feb 7 | 330 | two-plantings: Plant Jan 24 and again by Oct 12; both mature before Dec 20. | Oct 12 |
| Bok Choy | Feb 7 | Feb 28–Mar 7 | 281 | two-plantings: Plant Feb 28 and again by Oct 8; both mature before Dec 6. | Oct 8 |
| Collards | Dec 27 | Feb 7–Feb 21 | 316 | two-plantings: Plant Feb 7 and again by Oct 7; both mature before Dec 20. | Oct 7 |
| Cantaloupe | Feb 21 | Mar 21–Mar 28 | 225 | fits: 85 days to maturity, 225 available after Mar 21. | Jul 25 |
| Chives | Dec 13 | Mar 14–Mar 21 | 281 | fits: 90 days to maturity, 281 available after Mar 14. | — |
| Dill | — | Jan 10–Apr 4 | 330 | two-plantings: Plant Jan 10 and again by Sep 28; both mature before Dec 6. | Sep 28 |
| Oregano | Dec 27 | Mar 14–Mar 21 | 281 | fits: 80 days to maturity, 281 available after Mar 14. | — |
| Rosemary | Dec 13 | Mar 14–Mar 21 | 267 | fits: 80 days to maturity, 267 available after Mar 14. | — |
| Sage | Jan 10 | Mar 14–Mar 21 | 281 | fits: 75 days to maturity, 281 available after Mar 14. | — |
| Thyme | Dec 27 | Mar 14–Mar 21 | 281 | fits: 90 days to maturity, 281 available after Mar 14. | — |
| Calendula | Jan 24 | Feb 21–Mar 7 | 288 | two-plantings: Plant Feb 21 and again by Oct 3; both mature before Dec 6. | Oct 3 |
| Cosmos | Feb 7 | Mar 7–Mar 21 | 253 | two-plantings: Plant Mar 7 and again by Sep 2; both mature before Nov 15. | Sep 2 |
| Lavender | Dec 13 | Mar 7–Mar 21 | 288 | fits: 90 days to maturity, 288 available after Mar 7. | — |
| Marigolds | Jan 24 | Mar 7–Mar 14 | 253 | two-plantings: Plant Mar 7 and again by Sep 12; both mature before Nov 15. | Sep 12 |
| Melons | Feb 21 | Mar 21–Mar 28 | 225 | fits: 85 days to maturity, 225 available after Mar 21. | Jul 25 |
| Mint | — | Mar 7–Mar 21 | 288 | fits: 90 days to maturity, 288 available after Mar 7. | — |
| Nasturtiums | Feb 7 | Mar 7–Mar 14 | 253 | two-plantings: Plant Mar 7 and again by Sep 7; both mature before Nov 15. | Sep 7 |
| Pole Beans | — | Mar 14–Mar 28 | 246 | fits: 65 days to maturity, 246 available after Mar 14. | Aug 28 |
| Spaghetti Squash | Feb 21 | Mar 21–Mar 28 | 232 | fits: 90 days to maturity, 232 available after Mar 21. | Jul 27 |
| Sunflowers | — | Mar 7–Mar 21 | 253 | fits: 70 days to maturity, 253 available after Mar 7. | Aug 23 |
| Tomatillos | Jan 10 | Mar 14–Mar 21 | 232 | fits: 75 days to maturity, 232 available after Mar 14. | Aug 4 |
| Watermelon | Feb 21 | Mar 14–Mar 21 | 232 | fits: 80 days to maturity, 232 available after Mar 14. | Jul 30 |
| Yellow Squash | Feb 21 | Mar 21–Mar 28 | 239 | two-plantings: Plant Mar 21 and again by Sep 7; both mature before Nov 15. | Sep 7 |
| Zinnias | Feb 7 | Mar 7–Mar 21 | 253 | two-plantings: Plant Mar 7 and again by Sep 2; both mature before Nov 15. | Sep 2 |
Month by month in Santa Clarita
| Month | What to do |
|---|---|
| January | Start indoors: Broccoli (Jan 10), Brussel Sprouts (Jan 10), Cabbage (Jan 10), Lettuce (Jan 10), Sage (Jan 10), Swiss Chard (Jan 10), +8 more. Direct sow from: Arugula (Jan 10), Beets (Jan 10), Dill (Jan 10), Peas (Jan 10), Radish (Jan 10), Spinach (Jan 10), +1 more. Plant: Strawberry (Jan 31). |
| February | Start indoors: Bok Choy (Feb 7), Corn (Feb 7), Cosmos (Feb 7), Nasturtiums (Feb 7), Okra (Feb 7), Zinnias (Feb 7), +9 more. Direct sow from: Cilantro (Feb 7), Turnip (Feb 7), Carrots (Feb 14), Potatoes (Feb 21). Transplant from: Broccoli (Feb 7), Brussel Sprouts (Feb 7), Cabbage (Feb 7), Collards (Feb 7), Kale (Feb 7), Lettuce (Feb 7), +6 more. |
| March | Direct sow from: Sunflowers (Mar 7), Beans (Mar 14), Pole Beans (Mar 14). Transplant from: Cosmos (Mar 7), Lavender (Mar 7), Marigolds (Mar 7), Mint (Mar 7), Nasturtiums (Mar 7), Zinnias (Mar 7), +23 more. Last frost around March 7. |
| April | Frost has passed. Transplant tomatoes, peppers, and basil outdoors. Direct sow beans, cucumbers, squash, and zucchini. |
| May | Succession plant lettuce and greens. Keep beds weeded and watered consistently. |
| June | Harvest regularly to encourage production. Monitor for pests and disease. |
| July | Last sowing dates: Butternut Squash (Jul 17), Pumpkin (Jul 17), Cantaloupe (Jul 25), Celery (Jul 25), Melons (Jul 25), Spaghetti Squash (Jul 27), +2 more. |
| August | Last sowing dates: Pepper (Aug 4), Tomatillos (Aug 4), Eggplant (Aug 9), Corn (Aug 11), Sunflowers (Aug 23), Brussel Sprouts (Aug 28), +1 more. |
| September | Last sowing dates: Basil (Sep 2), Cosmos (Sep 2), Cucumber (Sep 2), Zinnias (Sep 2), Broccoli (Sep 3), Nasturtiums (Sep 7), +13 more. |
| October | Last sowing dates: Calendula (Oct 3), Cilantro (Oct 3), Collards (Oct 7), Scallions (Oct 7), Bok Choy (Oct 8), Lettuce (Oct 8), +6 more. |
| November | Direct sow from: Garlic (Nov 29). First frost around November 29. |
| December | Start indoors: Chives (Dec 13), Lavender (Dec 13), Onion (Dec 13), Rosemary (Dec 13), Celery (Dec 27), Collards (Dec 27), +5 more. Last sowing dates: Garlic (Dec 20). |
Frequently Asked Questions
What is the last frost date for Santa Clarita, CA (ZIP 91350)?
The median last spring frost date for Santa Clarita, CA (ZIP code 91350) is around March 7. 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 February 2; one in ten it runs past April 9.
What is the first fall frost date in Santa Clarita, CA?
The median first fall frost date for Santa Clarita, CA is around November 29. 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 November 7 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Santa Clarita, CA?
The frost-free growing season in Santa Clarita is about 267 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 Santa Clarita (267 frost-free days, a very long season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.
What USDA hardiness zone is Santa Clarita, CA?
Santa Clarita, CA is in USDA hardiness zone 10a (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 Santa Clarita, CA?
Start tomatoes indoors Jan 31 and plant out Mar 21 in Santa Clarita. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Santa Clarita?
Two: plant Feb 7 and again by Oct 8; both mature before Dec 6.
When do I plant garlic in Santa Clarita?
Nov 29 to Dec 20; it overwinters and is ready the following summer.
Can I get two tomato crops in Santa Clarita?
Yes: plant out Mar 21 for a summer crop, and set out a second round of transplants by Jul 30 for a fall crop.
Which nearby ZIP has a longer season?
Newhall (ZIP 91321) has 312 frost-free days, 45 more than Santa Clarita (ZIP 91350). See Newhall ZIP 91321 frost dates
Nearby and related
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