Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated

Planting zone for 74150 — Tulsa, OK

ZIP code 74150 (Tulsa, Tulsa County) is in USDA zone 7b: the coldest winter night averages 5 to 10 °F. The median last spring frost is March 30 and the first fall frost November 4.

Where ZIP 74150 is

tap the map for the zone at any spot · scroll or pinch to zoom

Not the official USDA Plant Hardiness Zone Map. Zones come from the 2023 USDA hardiness-zone data by the PRISM Group, Oregon State University; we re-mapped and recolored them. The official map is at planthardiness.ars.usda.gov.

Zone7b5 to 10 °F
Coldest night−15 to −12.2 °C
Last frostMar 30
First frostNov 4
2012 zone7a

Was 7a on the 2012 map — half a zone warmer now. The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 7b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Tulsa, OK…

Forecast data: National Weather Service (api.weather.gov), public domain. This is not a warning service — for official frost and freeze warnings see weather.gov.

Frost dates in Tulsa, OK

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMarch 30median — 50% chance of a later frost
Safe for tender plantsApril 17only 10% chance of frost after
First fall frostNovember 4median — 10% chance by Oct 21
Growing season220 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 15 and returns around November 14.

From the NOAA station Tulsa R L Jones Jr Airport, OK — 7 miles away, elevation 640 ft. NOAA NCEI U.S. Climate Normals 1991–2020, 32 °F threshold. Low spots and valleys can freeze later in spring than the station.

When to plant vegetables in 74150

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 16 – Mar 2
SpinachSow outdoors · Feb 16 – Mar 9
Broccoli, cabbageStart indoors · Jan 19 – Feb 2
Broccoli, cabbageTransplant · Mar 9 – Mar 23
Onion setsPlant outdoors · Mar 2 – Mar 16
PotatoesPlant outdoors · Mar 9 – Mar 23
LettuceSow outdoors · Mar 2 – Mar 16
Carrots, beetsSow outdoors · Mar 9 – Mar 23
TomatoesStart indoors · Feb 2 – Feb 16
TomatoesTransplant · Apr 6 – Apr 20
Peppers, eggplantStart indoors · Jan 19 – Feb 2
Peppers, eggplantTransplant · Apr 13 – Apr 27
BeansSow outdoors · Apr 6 – Apr 20
Sweet cornSow outdoors · Apr 6 – Apr 20
Cucumbers, squashSow outdoors · Apr 6 – Apr 20
Fall lettuce, spinachSow outdoors · Sep 9 – Sep 23
GarlicPlant cloves · Oct 21 – Nov 25
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 30) and first fall frost (Nov 4) with the rules of thumb U.S. extension services publish. Cool-season crops take a light frost; warm-season crops do best once the soil is above about 60 °F.

When spring arrived in 2026

In 2026, spring leaf-out near 74150 came on Feb 12 — 13 days earlier than the 1991–2020 average (Feb 25).

JanFebMarAprMayJun

The Spring Index marks the day when accumulated warmth is enough for lilac and honeysuckle to leaf out — a widely used signal that the growing season has started. Source: USA National Phenology Network, www.usanpn.org — Spring Indices, first leaf, 2026 (data as of 2026-09-08) and 30-year average 1991–2020 (CC BY 4.0).

Native plants for zone 7b in Oklahoma

518 plants native to the lower 48 states, recorded in Oklahoma, and rated by the USDA to survive 5 °F or colder — the bottom of zone 7b. Each links to its USDA PLANTS profile.

Trees 60

American basswood100 ft · blooms late spring · low shade tolerance · to −46 °FAmerican beech80 ft · blooms mid spring · low shade tolerance · to −44 °FAmerican elm120 ft · blooms early spring · medium shade tolerance · to −46 °FAmerican sycamore100 ft · blooms spring · medium shade tolerance · to −34 °FArizona walnut50 ft · blooms late spring · high shade tolerance · to −33 °Fbald cypress130 ft · blooms mid spring · medium shade tolerance · to −18 °F

Shrubs 91

alderleaf mountain mahogany15 ft · blooms late spring · medium shade tolerance · to −41 °FAmerican beautyberry6 ft · blooms early summer · medium shade tolerance · to −8 °FAmerican hazelnut10 ft · blooms spring · medium shade tolerance · to −33 °FAmerican holly40 ft · blooms mid spring · low shade tolerance · to −20 °FAmerican hornbeam30 ft · blooms mid spring · low shade tolerance · to −34 °FAmerican plum24 ft · blooms mid spring · high shade tolerance · to −38 °F

Wildflowers & perennials 188

alkali buttercup1 ft · blooms late spring · low shade tolerance · to −38 °FAmerican bur-reed3 ft · blooms indeterminate · medium shade tolerance · to −33 °FAmerican eelgrass1 ft · blooms mid summer · high shade tolerance · to −33 °FAmerican licorice4 ft · blooms late spring · medium shade tolerance · to −38 °FAmerican lotus3 ft · blooms mid summer · high shade tolerance · to −36 °FAmerican pokeweed7 ft · blooms mid summer · low shade tolerance · to −33 °F

Grasses 157

alkali sacaton3 ft · blooms mid summer · high shade tolerance · to −38 °FAmerican cupscale3 ft · blooms early summer · high shade tolerance · to −18 °FArizona cottontop4 ft · blooms late summer · high shade tolerance · to −13 °FArizona threeawn2 ft · blooms mid summer · high shade tolerance · to −3 °Fautumn bluegrass1.5 ft · blooms late spring · medium shade tolerance · to −8 °Fawlfruit sedge4 ft · blooms mid spring · low shade tolerance · to −38 °F

Vines 15

American bittersweet15 ft · blooms spring · low shade tolerance · to −38 °FAmerican wisteria50 ft · blooms spring · low shade tolerance · to −3 °Fcatbird grape30 ft · blooms late spring · medium shade tolerance · to −13 °Fcupseed30 ft · blooms late spring · low shade tolerance · to −3 °Fdevil's darning needles15 ft · blooms mid summer · medium shade tolerance · to −38 °Ffrost grape83 ft · blooms late spring · medium shade tolerance · to −23 °F

Source: USDA, NRCS. 2026. The PLANTS Database (plants.usda.gov), National Plant Data Team — state distribution, native status and the “Temperature, Minimum” characteristic. Check light, moisture and soil needs before buying; local nurseries and your state native plant society can confirm what thrives in Tulsa, OK.

Soil in Tulsa, OK

The soil mapped at the center of ZIP 74150 is Choska — very fine sandy loam, well drained.

TextureVery fine sandy loamdrains and warms fast; dries out and needs more feeding
pH7.0neutral; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter2%moderate
Hydrologic groupBwater soaks in moderately
Farmland classNot prime farmlandUSDA classification

Map unit: Choska-Severn-Urban land complex, 0 to 1 percent slopes, rarely flooded.

Soil Survey Staff, Natural Resources Conservation Service, USDA. Soil Survey Geographic (SSURGO) Database, via Soil Data Access, accessed 2026-10-29. The soil at the center point of ZIP 74150; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Tulsa, OK

Summer high94 °Faverage high, July
Winter low28 °Faverage low, January
Hot days81days a year at 90 °F or more
Freezing nights81nights a year at 32 °F or less
Growing degree days5,363base 50 °F — the season’s usable heat
Longest day14 h 37 mindaylight on June 21
Shortest day9 h 42 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation44.3 inper year, rain and melted snow

Average high and low, by month

20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 50 °F, low 28 °F 50°28° JanFebruary: average high 55 °F, low 32 °F 55°32° FebMarch: average high 64 °F, low 41 °F 64°41° MarApril: average high 73 °F, low 50 °F 73°50° AprMay: average high 80 °F, low 60 °F 80°60° MayJune: average high 89 °F, low 69 °F 89°69° JunJuly: average high 94 °F, low 73 °F 94°73° JulAugust: average high 94 °F, low 71 °F 94°71° AugSeptember: average high 85 °F, low 63 °F 85°63° SepOctober: average high 74 °F, low 51 °F 74°51° OctNovember: average high 62 °F, low 39 °F 62°39° NovDecember: average high 52 °F, low 31 °F 52°31° Dec

Precipitation by month inches

0″1″2″3″4″5″6″January: 1.93 in precipitation 1.9 JanFebruary: 1.80 in precipitation 1.8 FebMarch: 3.38 in precipitation 3.4 MarApril: 4.30 in precipitation 4.3 AprMay: 5.58 in precipitation 5.6 MayJune: 4.80 in precipitation 4.8 JunJuly: 4.69 in precipitation 4.7 JulAugust: 4.24 in precipitation 4.2 AugSeptember: 3.84 in precipitation 3.8 SepOctober: 4.16 in precipitation 4.2 OctNovember: 2.91 in precipitation 2.9 NovDecember: 2.64 in precipitation 2.6 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Tulsa R L Jones Jr Airport, OK (7 mi away); precipitation: Tulsa 6.3 Wsw, OK (3 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 7b.

741217b
Tulsa, OK · <1 mi
741417b
Tulsa, OK · <1 mi
741477b
Tulsa, OK · <1 mi
741487b
Tulsa, OK · <1 mi
741497b
Tulsa, OK · <1 mi
741527b
Tulsa, OK · <1 mi
741537b
Tulsa, OK · <1 mi
741557b
Tulsa, OK · <1 mi

All 51 ZIP codes in Tulsa → · Oklahoma planting zones →

Questions about 74150

What planting zone is ZIP code 74150?

ZIP code 74150 (Tulsa, OK) is in USDA hardiness zone 7b on the 2023 map: the coldest night of an average winter reaches 5 to 10 °F (−15 to −12.2 °C).

When is the last frost in Tulsa, OK?

The median last spring frost (32 °F) near 74150 is March 30; after April 17 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Tulsa R L Jones Jr Airport station.

When is the first frost in Tulsa, OK?

The median first fall frost near 74150 is November 4, giving a median frost-free growing season of 220 days.

When should I plant tomatoes in 74150?

Start tomato seeds indoors around Feb 2 – Feb 16 and set transplants outside around Apr 6 – Apr 20, one to three weeks after the median last frost.

How much rain and snow does 74150 get?

About 44.3 inches of precipitation a year (NOAA 1991–2020 normals, Tulsa 6.3 Wsw station).

How hot do summers get in Tulsa, OK?

The average high peaks at 94 °F in July, with about 81 days a year at 90 °F or more.

What kind of soil does 74150 have?

The USDA soil survey maps Choska at the center of ZIP 74150: very fine sandy loam, well drained, pH about 7.0 (neutral).

Did spring come early in Tulsa, OK in 2026?

Spring leaf-out near 74150 came on Feb 12 in 2026, 13 days earlier than the 1991–2020 average (Feb 25), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Tulsa, OK?

Intermediate onions: the longest day near 74150 is 14 h 37 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 74150 change?

Yes. The 2012 USDA map put 74150 in zone 7a; the 2023 map puts it in zone 7b. The newer map uses 1991–2020 data and more weather stations.