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

Planting zone for Bartlesville, OK

Bartlesville, OK is in USDA zone 7a across its 4 ZIP codes. The median last spring frost is April 11 and the first fall frost October 24.

Bartlesville on the zone map

Outlined: its 2 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.

Zone7a0 to 5 °F
ZIP codes4
Last frostApr 11
First frostOct 24
Growing season195 days

7a 4 ZIPs

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Bartlesville, 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 Bartlesville, OK

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 11median — 50% chance of a later frost
Safe for tender plantsApril 30only 10% chance of frost after
First fall frostOctober 24median — 10% chance by Oct 8
Growing season195 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 1 and returns around November 2.

From the NOAA station Bartlesville 3, OK, elevation 715 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 Bartlesville

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 28 – Mar 14
SpinachSow outdoors · Feb 28 – Mar 21
Broccoli, cabbageStart indoors · Jan 31 – Feb 14
Broccoli, cabbageTransplant · Mar 21 – Apr 4
Onion setsPlant outdoors · Mar 14 – Mar 28
PotatoesPlant outdoors · Mar 21 – Apr 4
LettuceSow outdoors · Mar 14 – Mar 28
Carrots, beetsSow outdoors · Mar 21 – Apr 4
TomatoesStart indoors · Feb 14 – Feb 28
TomatoesTransplant · Apr 18 – May 2
Peppers, eggplantStart indoors · Jan 31 – Feb 14
Peppers, eggplantTransplant · Apr 25 – May 9
BeansSow outdoors · Apr 18 – May 2
Sweet cornSow outdoors · Apr 18 – May 2
Cucumbers, squashSow outdoors · Apr 18 – May 2
Fall lettuce, spinachSow outdoors · Aug 29 – Sep 12
GarlicPlant cloves · Oct 10 – Nov 14
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 11) and first fall frost (Oct 24) 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 74005 came on Feb 15 — 15 days earlier than the 1991–2020 average (Mar 2).

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 7a in Oklahoma

511 plants native to the lower 48 states, recorded in Oklahoma, and rated by the USDA to survive 0 °F or colder — the bottom of zone 7a. Each links to its USDA PLANTS profile.

Trees 59

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 90

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 187

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 153

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 Bartlesville, OK.

Soil in Bartlesville, OK

The soil mapped at the center of ZIP 74005 is Dennis — silt loam, somewhat poorly drained.

TextureSilt loama good balance for most vegetables
pH5.6moderately acidic; most vegetables like 6.0–7.0
DrainageSomewhat poorly drainedconsider raised beds
Organic matter2.5%moderate
Hydrologic groupC/Dslow when drained; wet otherwise
Farmland classprime farmlandUSDA classification

Map unit: Dennis silt loam, 1 to 3 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 74005; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Bartlesville, OK

Summer high93 °Faverage high, July
Winter low22 °Faverage low, January
Hot days71days a year at 90 °F or more
Freezing nights109nights a year at 32 °F or less
Growing degree days4,575base 50 °F — the season’s usable heat
Longest day14 h 41 mindaylight on June 21
Shortest day9 h 39 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation39.7 inper year, rain and melted snow

Average high and low, by month

10°20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 48 °F, low 22 °F 48°22° JanFebruary: average high 53 °F, low 26 °F 53°26° FebMarch: average high 62 °F, low 34 °F 62°34° MarApril: average high 71 °F, low 44 °F 71°44° AprMay: average high 79 °F, low 54 °F 79°54° MayJune: average high 88 °F, low 64 °F 88°64° JunJuly: average high 93 °F, low 68 °F 93°68° JulAugust: average high 92 °F, low 66 °F 92°66° AugSeptember: average high 85 °F, low 57 °F 85°57° SepOctober: average high 74 °F, low 45 °F 74°45° OctNovember: average high 61 °F, low 33 °F 61°33° NovDecember: average high 49 °F, low 25 °F 49°25° Dec

Precipitation by month inches

0″1″2″3″4″5″6″January: 2.00 in precipitation 2.0 JanFebruary: 1.88 in precipitation 1.9 FebMarch: 2.94 in precipitation 2.9 MarApril: 4.02 in precipitation 4.0 AprMay: 4.86 in precipitation 4.9 MayJune: 5.31 in precipitation 5.3 JunJuly: 3.70 in precipitation 3.7 JulAugust: 3.33 in precipitation 3.3 AugSeptember: 3.48 in precipitation 3.5 SepOctober: 3.45 in precipitation 3.5 OctNovember: 2.52 in precipitation 2.5 NovDecember: 2.22 in precipitation 2.2 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Bartlesville 3, OK (2 mi away); precipitation: Bartlesville 3, OK (2 mi away). Daylight is calculated from latitude.

ZIP codes in Bartlesville

740037a
0 to 5 °F
740047a
0 to 5 °F
740057a
0 to 5 °F
740067a
0 to 5 °F

Oklahoma planting zones →

Questions about Bartlesville

What planting zone is Bartlesville, OK?

Bartlesville, OK is in USDA hardiness zone 7a on the 2023 map (7a: 0 to 5 °F).

When is the last frost in Bartlesville, OK?

The median last spring frost is April 11 and the median first fall frost is October 24 (NOAA 1991–2020 normals, Bartlesville 3 station).

When can I plant a garden in Bartlesville, OK?

Cool-season crops like peas and spinach go in around Feb 28 – Mar 21; tomatoes, peppers, beans and squash after about Apr 18, once frost risk has passed.

What kind of onions grow in Bartlesville, OK?

Intermediate onions: the longest day is 14 h 41 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

How much rain and snow does Bartlesville, OK get?

About 39.7 inches of precipitation a year (NOAA 1991–2020 normals).