Frost Dates for Tulsa, OK 74171
Tulsa has 29 ZIP codes. The Tulsa, OK frost page lists all of them with their dates.
Last spring frost April 2 · First fall frost October 26 · 207 frost-free days · USDA Zone 7b
ZIP 74171 has about 2,210 people, one of 29 ZIP codes in Tulsa.
Long season: 207 frost-free days. Spring frost risk spans March 19–April 16 (28 days). Fall frost risk spans October 10–November 12 (33 days).
Frost probability for 74171
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | April 16 | April 2 | March 19 |
| Fall (first frost) | October 10 | October 26 | November 12 |
Dates come from NOAA 1971–2000 freeze probabilities at BIXBY (9.7 km away); the 50% date is the median year.
Which crops fit a 207-day season in Tulsa
In Tulsa (207 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 26 | Apr 16–Apr 23 | 165 | fits: 80 days to maturity, 165 available after Apr 16. | Jun 26 |
| Pepper | Feb 19 | Apr 16–Apr 23 | 165 | fits: 75 days to maturity, 165 available after Apr 16. | Jul 1 |
| Lettuce | Feb 5 | Mar 5–Mar 12 | 242 | two-plantings: Plant Mar 5 and again by Sep 4; both mature before Nov 2. | Sep 4 |
| Carrots | — | Mar 12–Mar 19 | 249 | fits: 70 days to maturity, 249 available after Mar 12. | Aug 24 |
| Cucumber | Mar 12 | Apr 16–Apr 23 | 179 | two-plantings: Plant Apr 16 and again by Jul 30; both mature before Oct 12. | Jul 30 |
| Beans | — | Apr 9–Apr 23 | 193 | two-plantings: Plant Apr 9 and again by Aug 6; both mature before Oct 19. | Aug 6 |
| Peas | — | Feb 5–Apr 16 | 270 | fits: 65 days to maturity, 270 available after Feb 5. | Aug 15 |
| Zucchini | Mar 19 | Apr 16–Apr 23 | 179 | two-plantings: Plant Apr 16 and again by Aug 4; both mature before Oct 12. | Aug 4 |
| Onion | Jan 8 | Mar 5–Mar 19 | 242 | fits: 100 days to maturity, 242 available after Mar 5. | — |
| Spinach | — | Feb 5–Mar 26 | 284 | two-plantings: Plant Feb 5 and again by Sep 23; both mature before Nov 16. | Sep 23 |
| Kale | Jan 22 | Mar 5–Mar 19 | 256 | two-plantings: Plant Mar 5 and again by Sep 8; both mature before Nov 16. | Sep 8 |
| Broccoli | Feb 5 | Mar 5–Mar 19 | 242 | fits: 80 days to maturity, 242 available after Mar 5. | Jul 31 |
| Cabbage | Feb 5 | Mar 5–Mar 19 | 256 | fits: 70 days to maturity, 256 available after Mar 5. | Aug 24 |
| Radish | — | Feb 5–Apr 30 | 270 | two-plantings: Plant Feb 5 and again by Sep 24; both mature before Nov 2. | Sep 24 |
| Beets | — | Feb 5–Apr 30 | 270 | two-plantings: Plant Feb 5 and again by Aug 25; both mature before Nov 2. | Aug 25 |
| Potatoes | — | Mar 19–Mar 26 | 228 | fits: 90 days to maturity, 228 available after Mar 19. | — |
| Garlic | — | Oct 26 | 312 | overwinter: Plant Oct 26 to Nov 16; harvest the following summer. | Nov 16 |
| Strawberry | — | Feb 26–Apr 23 | 263 | perennial: A perennial: plant Feb 26; it fruits from the following year and keeps producing for several years. | — |
| Corn | Mar 5 | Apr 9–Apr 16 | 179 | fits: 75 days to maturity, 179 available after Apr 9. | Jul 8 |
| Pumpkin | Mar 19 | Apr 16–Apr 16 | 172 | fits: 100 days to maturity, 172 available after Apr 16. | Jun 13 |
| Cauliflower | Feb 19 | Mar 26–Apr 9 | 221 | fits: 75 days to maturity, 221 available after Mar 26. | Aug 5 |
| Swiss Chard | Feb 5 | Mar 19–Mar 19 | 228 | two-plantings: Plant Mar 19 and again by Aug 25; both mature before Nov 2. | Aug 25 |
| Arugula | — | Feb 5–Apr 30 | 284 | two-plantings: Plant Feb 5 and again by Sep 23; both mature before Nov 16. | Sep 23 |
| Brussel Sprouts | Feb 5 | Mar 5–Mar 19 | 256 | fits: 100 days to maturity, 256 available after Mar 5. | Jul 25 |
| Butternut Squash | Mar 19 | Apr 16–Apr 23 | 172 | fits: 100 days to maturity, 172 available after Apr 16. | Jun 13 |
| Eggplant | Feb 12 | Apr 16–Apr 23 | 165 | fits: 70 days to maturity, 165 available after Apr 16. | Jul 6 |
| Okra | Mar 5 | Apr 9–Apr 16 | 186 | two-plantings: Plant Apr 9 and again by Aug 4; both mature before Oct 12. | Aug 4 |
| Basil | Feb 26 | Apr 23–Apr 23 | 172 | two-plantings: Plant Apr 23 and again by Jul 30; both mature before Oct 12. | Jul 30 |
| Cilantro | — | Mar 5–Mar 26 | 242 | two-plantings: Plant Mar 5 and again by Aug 30; both mature before Nov 2. | Aug 30 |
| Parsley | Jan 22 | Apr 9–Apr 16 | 207 | fits: 70 days to maturity, 207 available after Apr 9. | Aug 10 |
| Celery | Jan 22 | Apr 9–Apr 23 | 207 | fits: 120 days to maturity, 207 available after Apr 9. | Jun 21 |
| Scallions | Jan 22 | Mar 5–Mar 19 | 256 | two-plantings: Plant Mar 5 and again by Sep 3; both mature before Nov 16. | Sep 3 |
| Turnip | — | Mar 5–Mar 19 | 256 | two-plantings: Plant Mar 5 and again by Sep 13; both mature before Nov 16. | Sep 13 |
| Kohlrabi | — | Feb 19–Mar 5 | 270 | two-plantings: Plant Feb 19 and again by Sep 8; both mature before Nov 16. | Sep 8 |
| Bok Choy | Mar 5 | Mar 26–Apr 2 | 221 | two-plantings: Plant Mar 26 and again by Sep 4; both mature before Nov 2. | Sep 4 |
| Collards | Jan 22 | Mar 5–Mar 19 | 256 | two-plantings: Plant Mar 5 and again by Sep 3; both mature before Nov 16. | Sep 3 |
| Cantaloupe | Mar 19 | Apr 16–Apr 23 | 165 | fits: 85 days to maturity, 165 available after Apr 16. | Jun 21 |
| Chives | Jan 8 | Apr 9–Apr 16 | 221 | fits: 90 days to maturity, 221 available after Apr 9. | — |
| Dill | — | Feb 5–Apr 30 | 270 | two-plantings: Plant Feb 5 and again by Aug 25; both mature before Nov 2. | Aug 25 |
| Oregano | Jan 22 | Apr 9–Apr 16 | 221 | fits: 80 days to maturity, 221 available after Apr 9. | — |
| Rosemary | Jan 8 | Apr 9–Apr 16 | 207 | fits: 80 days to maturity, 207 available after Apr 9. | — |
| Sage | Feb 5 | Apr 9–Apr 16 | 221 | fits: 75 days to maturity, 221 available after Apr 9. | — |
| Thyme | Jan 22 | Apr 9–Apr 16 | 221 | fits: 90 days to maturity, 221 available after Apr 9. | — |
| Calendula | Feb 19 | Mar 19–Apr 2 | 228 | two-plantings: Plant Mar 19 and again by Aug 30; both mature before Nov 2. | Aug 30 |
| Cosmos | Mar 5 | Apr 2–Apr 16 | 193 | two-plantings: Plant Apr 2 and again by Jul 30; both mature before Oct 12. | Jul 30 |
| Lavender | Jan 8 | Apr 2–Apr 16 | 228 | fits: 90 days to maturity, 228 available after Apr 2. | — |
| Marigolds | Feb 19 | Apr 2–Apr 9 | 193 | two-plantings: Plant Apr 2 and again by Aug 9; both mature before Oct 12. | Aug 9 |
| Melons | Mar 19 | Apr 16–Apr 23 | 165 | fits: 85 days to maturity, 165 available after Apr 16. | Jun 21 |
| Mint | — | Apr 2–Apr 16 | 228 | fits: 90 days to maturity, 228 available after Apr 2. | — |
| Nasturtiums | Mar 5 | Apr 2–Apr 9 | 193 | two-plantings: Plant Apr 2 and again by Aug 4; both mature before Oct 12. | Aug 4 |
| Pole Beans | — | Apr 9–Apr 23 | 186 | fits: 65 days to maturity, 186 available after Apr 9. | Jul 25 |
| Spaghetti Squash | Mar 19 | Apr 16–Apr 23 | 172 | fits: 90 days to maturity, 172 available after Apr 16. | Jun 23 |
| Sunflowers | — | Apr 2–Apr 16 | 193 | fits: 70 days to maturity, 193 available after Apr 2. | Jul 20 |
| Tomatillos | Feb 5 | Apr 9–Apr 16 | 172 | fits: 75 days to maturity, 172 available after Apr 9. | Jul 1 |
| Watermelon | Mar 19 | Apr 9–Apr 16 | 172 | fits: 80 days to maturity, 172 available after Apr 9. | Jun 26 |
| Yellow Squash | Mar 19 | Apr 16–Apr 23 | 179 | two-plantings: Plant Apr 16 and again by Aug 4; both mature before Oct 12. | Aug 4 |
| Zinnias | Mar 5 | Apr 2–Apr 16 | 193 | two-plantings: Plant Apr 2 and again by Jul 30; both mature before Oct 12. | Jul 30 |
Month by month in Tulsa
| Month | What to do |
|---|---|
| January | Start indoors: Chives (Jan 8), Lavender (Jan 8), Onion (Jan 8), Rosemary (Jan 8), Celery (Jan 22), Collards (Jan 22), +5 more. |
| February | Start indoors: Broccoli (Feb 5), Brussel Sprouts (Feb 5), Cabbage (Feb 5), Lettuce (Feb 5), Sage (Feb 5), Swiss Chard (Feb 5), +8 more. Direct sow from: Arugula (Feb 5), Beets (Feb 5), Dill (Feb 5), Peas (Feb 5), Radish (Feb 5), Spinach (Feb 5), +1 more. Plant: Strawberry (Feb 26). |
| March | Start indoors: Bok Choy (Mar 5), Corn (Mar 5), Cosmos (Mar 5), Nasturtiums (Mar 5), Okra (Mar 5), Zinnias (Mar 5), +9 more. Direct sow from: Cilantro (Mar 5), Turnip (Mar 5), Carrots (Mar 12), Potatoes (Mar 19). Transplant from: Broccoli (Mar 5), Brussel Sprouts (Mar 5), Cabbage (Mar 5), Collards (Mar 5), Kale (Mar 5), Lettuce (Mar 5), +6 more. |
| April | Direct sow from: Sunflowers (Apr 2), Beans (Apr 9), Pole Beans (Apr 9). Transplant from: Cosmos (Apr 2), Lavender (Apr 2), Marigolds (Apr 2), Mint (Apr 2), Nasturtiums (Apr 2), Zinnias (Apr 2), +23 more. Last frost around April 2. |
| May | Frost has passed. Transplant tomatoes, peppers, and basil outdoors. Direct sow beans, cucumbers, squash, and zucchini. |
| June | Last sowing dates: Butternut Squash (Jun 13), Pumpkin (Jun 13), Cantaloupe (Jun 21), Celery (Jun 21), Melons (Jun 21), Spaghetti Squash (Jun 23), +2 more. |
| July | Last sowing dates: Pepper (Jul 1), Tomatillos (Jul 1), Eggplant (Jul 6), Corn (Jul 8), Sunflowers (Jul 20), Brussel Sprouts (Jul 25), +6 more. |
| August | Last sowing dates: Nasturtiums (Aug 4), Okra (Aug 4), Yellow Squash (Aug 4), Zucchini (Aug 4), Cauliflower (Aug 5), Beans (Aug 6), +10 more. |
| September | Last sowing dates: Collards (Sep 3), Scallions (Sep 3), Bok Choy (Sep 4), Lettuce (Sep 4), Kale (Sep 8), Kohlrabi (Sep 8), +4 more. |
| October | Direct sow from: Garlic (Oct 26). First frost around October 26. |
| November | Last sowing dates: Garlic (Nov 16). |
| December | Clean up spent plants. Add compost to beds. Rest, review, and plan next year's garden. |
Frequently Asked Questions
What is the last frost date for Tulsa, OK (ZIP 74171)?
The median last spring frost date for Tulsa, OK (ZIP code 74171) is around April 2. 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 19; one in ten it runs past April 16.
What is the first fall frost date in Tulsa, OK?
The median first fall frost date for Tulsa, OK is around October 26. 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 10 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Tulsa, OK?
The frost-free growing season in Tulsa is about 207 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 Tulsa (207 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 Tulsa, OK?
Tulsa, OK is in USDA hardiness zone 7b (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 Tulsa, OK?
Start tomatoes indoors Feb 26 and plant out Apr 16 in Tulsa. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Tulsa?
Two: plant Mar 5 and again by Sep 4; both mature before Nov 2.
When do I plant garlic in Tulsa?
Oct 26 to Nov 16; it overwinters and is ready the following summer.
Can I get two tomato crops in Tulsa?
Yes: plant out Apr 16 for a summer crop, and set out a second round of transplants by Jun 26 for a fall crop.
Nearby and related
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- When to plant in Tulsa, OK: month-by-month guide
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