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

Planting zone for Broken Arrow, OK

Broken Arrow, OK is in USDA zone 7b across its 4 ZIP codes. The median last spring frost is April 1 and the first fall frost November 1.

Broken Arrow on the zone map

Outlined: its 3 ZIP code areas · 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
ZIP codes4
Last frostApr 1
First frostNov 1
Growing season212 days

7b 4 ZIPs

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Broken Arrow, 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 Broken Arrow, OK

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 1median — 50% chance of a later frost
Safe for tender plantsApril 20only 10% chance of frost after
First fall frostNovember 1median — 10% chance by Oct 16
Growing season212 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 17 and returns around November 9.

From the NOAA station Bixby, OK, elevation 604 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 Broken Arrow

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 18 – Mar 4
SpinachSow outdoors · Feb 18 – Mar 11
Broccoli, cabbageStart indoors · Jan 21 – Feb 4
Broccoli, cabbageTransplant · Mar 11 – Mar 25
Onion setsPlant outdoors · Mar 4 – Mar 18
PotatoesPlant outdoors · Mar 11 – Mar 25
LettuceSow outdoors · Mar 4 – Mar 18
Carrots, beetsSow outdoors · Mar 11 – Mar 25
TomatoesStart indoors · Feb 4 – Feb 18
TomatoesTransplant · Apr 8 – Apr 22
Peppers, eggplantStart indoors · Jan 21 – Feb 4
Peppers, eggplantTransplant · Apr 15 – Apr 29
BeansSow outdoors · Apr 8 – Apr 22
Sweet cornSow outdoors · Apr 8 – Apr 22
Cucumbers, squashSow outdoors · Apr 8 – Apr 22
Fall lettuce, spinachSow outdoors · Sep 6 – Sep 20
GarlicPlant cloves · Oct 18 – Nov 22
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 1) and first fall frost (Nov 1) 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 74013 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 Broken Arrow, OK.

Soil in Broken Arrow, OK

The soil mapped at the center of ZIP 74013 is Okemah — silt loam, somewhat poorly drained.

TextureSilt loama good balance for most vegetables
pH6.5neutral; most vegetables like 6.0–7.0
DrainageSomewhat poorly drainedconsider raised beds
Organic matter2%moderate
Hydrologic groupC/Dslow when drained; wet otherwise
Farmland classprime farmlandUSDA classification

Map unit: Okemah silt loam, 0 to 1 percent slopes.

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 74013; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Broken Arrow, OK

Summer high94 °Faverage high, July
Winter low26 °Faverage low, January
Hot days65days a year at 90 °F or more
Freezing nights87nights a year at 32 °F or less
Growing degree days4,983base 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 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 49 °F, low 26 °F 49°26° JanFebruary: average high 54 °F, low 29 °F 54°29° FebMarch: average high 63 °F, low 38 °F 63°38° MarApril: average high 72 °F, low 47 °F 72°47° AprMay: average high 80 °F, low 57 °F 80°57° MayJune: average high 88 °F, low 67 °F 88°67° JunJuly: average high 94 °F, low 71 °F 94°71° JulAugust: average high 93 °F, low 69 °F 93°69° AugSeptember: average high 85 °F, low 60 °F 85°60° SepOctober: average high 74 °F, low 48 °F 74°48° OctNovember: average high 62 °F, low 36 °F 62°36° NovDecember: average high 52 °F, low 29 °F 52°29° Dec

Precipitation by month inches

0″2″4″6″January: 2.04 in precipitation 2.0 JanFebruary: 1.94 in precipitation 1.9 FebMarch: 3.36 in precipitation 3.4 MarApril: 4.26 in precipitation 4.3 AprMay: 6.37 in precipitation 6.4 MayJune: 5.12 in precipitation 5.1 JunJuly: 3.52 in precipitation 3.5 JulAugust: 3.65 in precipitation 3.6 AugSeptember: 4.01 in precipitation 4.0 SepOctober: 3.96 in precipitation 4.0 OctNovember: 3.09 in precipitation 3.1 NovDecember: 2.63 in precipitation 2.6 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Bixby, OK (7 mi away); precipitation: Broken Arrow 3.0 Nnw, OK (2 mi away). Daylight is calculated from latitude.

ZIP codes in Broken Arrow

740117b
5 to 10 °F
740127b
5 to 10 °F
740137b
5 to 10 °F
740147b
5 to 10 °F

Oklahoma planting zones →

Questions about Broken Arrow

What planting zone is Broken Arrow, OK?

Broken Arrow, OK is in USDA hardiness zone 7b on the 2023 map (7b: 5 to 10 °F).

When is the last frost in Broken Arrow, OK?

The median last spring frost is April 1 and the median first fall frost is November 1 (NOAA 1991–2020 normals, Bixby station).

When can I plant a garden in Broken Arrow, OK?

Cool-season crops like peas and spinach go in around Feb 18 – Mar 11; tomatoes, peppers, beans and squash after about Apr 8, once frost risk has passed.

What kind of onions grow in Broken Arrow, OK?

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

How much rain and snow does Broken Arrow, OK get?

About 44 inches of precipitation a year (NOAA 1991–2020 normals).