Fall in zone 7bPhoto: Dietmar Rabich, CC BY-SA 4.0, via Wikimedia Commons
Frost dates for ZIP 74145 (Tulsa, OK)
Average last spring and first fall frost dates with 10%, 50% and 90% odds, from NOAA's 1991–2020 climate normals for the nearest weather station, Tulsa R L Jones Jr AP, OK (7 miles away).
- Average last spring frostMar 3050% chance of a 32°F freeze after this date
- Average first fall frostNov 450% chance of a 32°F freeze by this date
- Growing season (frost-free)220 daysmedian, 32°F threshold
- USDA hardiness zone7b5 to 10°F avg. coldest night
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This week in your yard
As of Oct 18, 2026, from your frost dates, zone and soil temperature. Lawn timing · Vegetables · Pruning · Plants
Soil temperature now
2-inch depth
No soil station with a fresh reading within 62 miles.
4-inch depth
No soil station with a fresh reading within 62 miles.
Fall: Texas A&M AgriLife times fall pre-emergent (for winter weeds such as annual bluegrass) to soil cooling to about 70°F for several days. The 50–55°F band is the spring trigger. Always read and follow the product label.
7-day forecast and frost risk
The latest National Weather Service 7-day forecast and any Frost Advisory or Freeze Warning for 74145 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
No soil reading near this ZIP. Typical extension timing for your region: spring mid-February to mid-March; fall September to early October.
Fertilizer window
Lawn region: South Central plains. Timing only; always follow the product label.
- Bermudagrass (warm-season): Spring: Several weeks after the lawn is fully green (April–May) (about May 15 here, using green-up about 3–4 weeks after your average last frost); Summer: Every 4–6 weeks through mid-August (heaviest feeder of the group); Late: Light, low-nitrogen/high-potassium feeding about 4 weeks before first frost, or skip. Avoid: Heavy late-fall nitrogen (linked to spring dead spot).
- Tall fescue (cool-season): Early fall: September (main feeding); Late fall: November, while still green; Late winter: Optional light feeding February–March. Avoid: Feeding after mid-spring and through summer in the transition zone (stress and brown patch).
Plant now
Prune now
No frost-timed pruning windows are open this week.
Your average first frost is Nov 4: skip heavy pruning in the 6–8 weeks before it, because new growth may not harden off in time.
Spring-flowering shrubs are pruned right after their flowers fade, not by date. See the pruning guide.
Last spring frost odds
| Chance of a 32°F freeze after this date | Date |
|---|---|
| 90% (early: most years still freeze after this) | Mar 10 |
| 50% (the "average" last frost) | Mar 30 |
| 10% (cautious: only 1 year in 10 freezes later) | Apr 17 |
Most gardeners plant frost-tender crops (tomatoes, peppers, basil) after the 50% date, and closer to the 10% date for less risk.
First fall frost odds
| Chance the first 32°F freeze has happened by this date | Date |
|---|---|
| 10% (early: 1 year in 10 freezes this soon) | Oct 21 |
| 50% (the "average" first frost) | Nov 4 |
| 90% (late: most years have frozen by now) | Nov 20 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Apr 9 | Oct 26 |
| 32°F (freeze) | Mar 30 | Nov 4 |
| 28°F (hard freeze) | Mar 15 | Nov 14 |
n/a means NOAA did not publish a date at that threshold for this station (usually because it rarely gets that cold).
Vegetable planting calendar for 74145
Dates count from your average last spring frost (Mar 30) and first fall frost (Nov 4). Half of years have a frost after the spring date, so give tender crops (tomatoes, peppers, squash) some slack.
| Crop | Start indoors | Spring planting | Fall planting |
|---|---|---|---|
| Tomato | Feb 2–16 | Apr 6–20 (transplant) | Jul 8–Aug 5 (transplant) |
| Pepper (sweet and hot) | Jan 19–Feb 2 | Apr 13–27 (transplant) | Jul 15–Aug 5 (transplant) |
| Eggplant | Jan 19–Feb 2 | Apr 13–27 (transplant) | Jul 15–Aug 5 (transplant) |
| Tomatillo | Feb 2–16 | Apr 6–20 (transplant) | – |
| Lettuce | Feb 2–16 | Mar 9–30 (transplant) Mar 2–Apr 13 (sow outdoors) | Sep 9–30 (transplant) Aug 26–Sep 23 (sowing) |
| Spinach | – | Feb 16–Mar 9 (sow outdoors) | Sep 9–30 (sowing) |
| Kale | Feb 2–16 | Mar 2–16 (transplant) Mar 2–16 (sow outdoors) | Aug 12–Sep 9 (transplant) Jul 29–Aug 26 (sowing) |
| Collards | Feb 2–16 | Mar 2–30 (transplant) Mar 2–30 (sow outdoors) | Aug 12–Sep 9 (transplant) Jul 29–Aug 26 (sowing) |
| Broccoli | Jan 19–Feb 2 | Mar 2–16 (transplant) | Jul 29–Aug 26 (transplant) |
| Cabbage | Jan 19–Feb 2 | Mar 2–16 (transplant) | Jul 29–Aug 26 (transplant) |
| Cauliflower | Jan 19–Feb 2 | Mar 16–30 (transplant) | Jul 29–Aug 26 (transplant) |
| Brussels sprouts | Jan 5–19 | Mar 2–16 (transplant) | Jul 15–Aug 5 (transplant) |
| Kohlrabi | Feb 2–16 | Mar 2–16 (transplant) Mar 2–16 (sow outdoors) | Aug 26–Sep 9 (sowing) |
| Bok choy / Asian greens | – | Mar 2–16 (sow outdoors) | Sep 9–23 (sowing) |
| Arugula | – | Mar 2–30 (sow outdoors) | Sep 9–Oct 7 (sowing) |
| Mustard greens | – | Mar 2–23 (sow outdoors) | Sep 9–23 (sowing) |
| Swiss chard | Feb 16–Mar 2 | Mar 16–Apr 6 (transplant) Mar 16–Apr 13 (sow outdoors) | Aug 26–Sep 9 (sowing) |
| Beet | – | Mar 2–30 (sow outdoors) | Aug 26–Sep 9 (sowing) |
| Carrot | – | Mar 9–Apr 6 (sow outdoors) | Aug 12–26 (sowing) |
| Radish | – | Feb 23–Apr 6 (sow outdoors) | Sep 23–Oct 7 (sowing) |
| Turnip | – | Mar 2–23 (sow outdoors) | Aug 26–Sep 9 (sowing) |
| Parsnip | – | Mar 9–30 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Feb 2–Mar 2 (sow outdoors) | Aug 12–26 (sowing) |
| Onion (bulbing) | Jan 5–19 | Feb 16–Mar 2 (transplant) | – |
| Green onion / scallion | – | Feb 16–Mar 16 (sow outdoors) | Aug 26–Sep 9 (sowing) |
| Leek | Jan 5–19 | Mar 2–16 (transplant) | – |
| Garlic | – | – | Sep 23–Oct 21 (sowing) |
| Shallot | – | Feb 16–Mar 2 (transplant) | Sep 23–Oct 21 (sowing) |
| Potato | – | Mar 2–16 (transplant) | Jul 15–29 (transplant) |
| Sweet potato | – | Apr 20–May 4 (transplant) | – |
| Sweet corn | – | Apr 6–20 (sow outdoors) | – |
| Bean, bush (snap) | – | Apr 6–20 (sow outdoors) | Aug 12–26 (sowing) |
| Bean, pole | – | Apr 6–20 (sow outdoors) | – |
| Lima bean | – | Apr 13–27 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Apr 20–May 11 (sow outdoors) | – |
| Cucumber | Mar 2–9 | Apr 6–20 (transplant) Apr 6–20 (sow outdoors) | Aug 12–26 (sowing) |
| Summer squash / zucchini | Mar 2–9 | Apr 6–20 (transplant) Apr 6–20 (sow outdoors) | Aug 12–26 (sowing) |
| Winter squash | Mar 2–9 | Apr 6–20 (transplant) Apr 6–20 (sow outdoors) | – |
| Pumpkin | – | Apr 6–20 (sow outdoors) | – |
| Watermelon | Mar 2–9 | Apr 13–27 (transplant) Apr 13–27 (sow outdoors) | – |
| Cantaloupe / muskmelon | Mar 2–9 | Apr 13–27 (transplant) Apr 13–27 (sow outdoors) | – |
| Okra | Feb 16–Mar 2 | Apr 13–27 (transplant) Apr 13–27 (sow outdoors) | – |
| Celery | Jan 5–19 | Apr 6–13 (transplant) | – |
| Basil | Feb 16–Mar 2 | Apr 6–20 (transplant) Apr 6–20 (sow outdoors) | – |
| Cilantro | – | Mar 16–Apr 13 (sow outdoors) | Sep 9–23 (sowing) |
| Parsley | Jan 19–Feb 2 | Mar 16–30 (transplant) Mar 9–30 (sow outdoors) | – |
| Dill | – | Mar 30–Apr 13 (sow outdoors) | Sep 9–23 (sowing) |
| Sunflower | – | Mar 30–Apr 13 (sow outdoors) | – |
| Asparagus (crowns) | – | Mar 2–16 (transplant) | – |
| Rhubarb (crowns) | – | Mar 2–16 (transplant) | – |
| Strawberry (plants) | – | Mar 2–16 (transplant) | Aug 26–Sep 23 (transplant) |
Typical ranges from university extension planting calendars, adjusted to your frost dates. Probabilities, not guarantees. Fall windows that would overlap spring planting are left out, as are fall crops of frost-tender plants where the frost-free season is under 210 days.
Plants that do well here
Oklahoma has a university or garden plant program: Oklahoma Proven. Plant frost-tender annuals after March 30 here (the average last frost). Not affiliated with the program.
Where these numbers come from
Station: Tulsa R L Jones Jr AP, OK (NOAA GHCN-Daily ID USW00053908), elevation 638 ft, 6.6 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Tulsa Intl AP, OK | 7 mi | Mar 31 | Nov 4 |
| Bixby, OK | 8 mi | Apr 1 | Nov 1 |
| Claremore 2 ENE, OK | 23 mi | Apr 7 | Oct 30 |
The average last-frost dates of these stations span 8 days, a rough guide to local variation. See data sources & methods.
Frost questions for 74145
When is the last frost in 74145?
The average (50% chance) last spring freeze of 32°F for ZIP 74145 is March 30. For a more cautious planting date, use April 17, when only 1 year in 10 still sees a later freeze.
When is the first frost in 74145?
The average first fall freeze is November 4. In 1 year in 10 it comes by October 21.
What hardiness zone is 74145?
ZIP 74145 is in USDA zone 7b (5 to 10°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 74145 right now?
This page shows the latest 2-inch and 4-inch soil temperature from the nearest public soil station (USDA SCAN, NOAA USCRN or TexMesonet), or a labeled estimate when no station is close, against the 50–55°F spring pre-emergent band.
Nearby ZIP codes
74135 Tulsa 74146 Tulsa 74129 Tulsa 74112 Tulsa 74136 Tulsa 74114 Tulsa 74105 Tulsa 74133 Tulsa
Other ZIP codes in Tulsa County
74008 74011 74012 74021 74033 74037 74055 74063 74103 74104 74105 74106 74107 74108 74110 74112 74114 74115 74116 74117 74119 74120 74128 74129 All Tulsa County frost dates · Oklahoma frost dates
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Weekly yard timing, plus frost and soil-temperature alerts for your ZIP code.
- Freeze alerts
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Free. One weekly email plus alerts when your ZIP has a frost or a soil-temperature change worth acting on. After you submit, Kit (our email provider) sends a confirmation email: check your email and click the link to confirm. You aren't subscribed until you do. We collect only your email address and ZIP, sent to Kit to deliver The Dial. Unsubscribe anytime.