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

Planting zone for 66043 — Lansing, KS

ZIP code 66043 (Lansing, Leavenworth County) is in USDA zone 6b: the coldest winter night averages −5 to 0 °F. The median last spring frost is April 19 and the first fall frost October 19.

Where ZIP 66043 is

Outlined: the ZIP code area · 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.

Zone6b−5 to 0 °F
Coldest night−20.6 to −17.8 °C
Last frostApr 19
First frostOct 19
2012 zone6a

Was 6a 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 6b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Lansing, KS…

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 Lansing, KS

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 19median — 50% chance of a later frost
Safe for tender plantsMay 4only 10% chance of frost after
First fall frostOctober 19median — 10% chance by Oct 2
Growing season181 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 9 and returns around October 27.

From the NOAA station Leavenworth 3sw, KS — 4 miles away, elevation 873 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 66043

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 8 – Mar 22
SpinachSow outdoors · Mar 8 – Mar 29
Broccoli, cabbageStart indoors · Feb 8 – Feb 22
Broccoli, cabbageTransplant · Mar 29 – Apr 12
Onion setsPlant outdoors · Mar 22 – Apr 5
PotatoesPlant outdoors · Mar 29 – Apr 12
LettuceSow outdoors · Mar 22 – Apr 5
Carrots, beetsSow outdoors · Mar 29 – Apr 12
TomatoesStart indoors · Feb 22 – Mar 8
TomatoesTransplant · Apr 26 – May 10
Peppers, eggplantStart indoors · Feb 8 – Feb 22
Peppers, eggplantTransplant · May 3 – May 17
BeansSow outdoors · Apr 26 – May 10
Sweet cornSow outdoors · Apr 26 – May 10
Cucumbers, squashSow outdoors · Apr 26 – May 10
Fall lettuce, spinachSow outdoors · Aug 24 – Sep 7
GarlicPlant cloves · Oct 5 – Nov 9
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 19) and first fall frost (Oct 19) 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 66043 came on Feb 25 — 21 days earlier than the 1991–2020 average (Mar 18).

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 6b in Kansas

431 plants native to the lower 48 states, recorded in Kansas, and rated by the USDA to survive −5 °F or colder — the bottom of zone 6b. Each links to its USDA PLANTS profile.

Trees 37

American basswood100 ft · blooms late spring · low shade tolerance · to −46 °FAmerican elm120 ft · blooms early spring · medium shade tolerance · to −46 °FAmerican sycamore100 ft · blooms spring · medium shade tolerance · to −34 °Fbitternut hickory75 ft · blooms mid spring · high shade tolerance · to −47 °Fblack locust60 ft · blooms spring · high shade tolerance · to −37 °Fblack maple100 ft · blooms late spring · low shade tolerance · to −47 °F

Shrubs 64

alderleaf mountain mahogany15 ft · blooms late spring · medium shade tolerance · to −41 °FAmerican hazelnut10 ft · blooms spring · medium shade tolerance · to −33 °FAmerican plum24 ft · blooms mid spring · high shade tolerance · to −38 °Fblack cherry80 ft · blooms late spring · high shade tolerance · to −33 °Fblackhaw16 ft · blooms spring · low shade tolerance · to −33 °Fblackjack oak25 ft · blooms mid spring · high shade tolerance · to −13 °F

Wildflowers & perennials 176

alkali buttercup1 ft · blooms late spring · low shade tolerance · to −38 °FAmerican bur-reed3 ft · blooms indeterminate · medium 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 °FAmerican speedwell0.8 ft · blooms mid summer · low shade tolerance · to −38 °F

Grasses 134

alkali cordgrass3 ft · blooms late summer · high shade tolerance · to −38 °Falkali sacaton3 ft · blooms mid summer · high shade tolerance · to −38 °Fawlfruit sedge4 ft · blooms mid spring · low shade tolerance · to −38 °Fbeaked spikerush3 ft · blooms late spring · high shade tolerance · to −28 °FBicknell's sedge3 ft · blooms late spring · low shade tolerance · to −38 °Fbig bluestem6 ft · blooms summer · high shade tolerance · to −46 °F

Vines 11

American bittersweet15 ft · blooms spring · low shade tolerance · to −38 °Fdevil's darning needles15 ft · blooms mid summer · medium shade tolerance · to −38 °Ffrost grape83 ft · blooms late spring · medium shade tolerance · to −23 °Fgraybark grape50 ft · blooms late spring · medium shade tolerance · to −8 °Fheartleaf peppervine2 ft · blooms late spring · low shade tolerance · to −8 °Friverbank grape45 ft · blooms late spring · medium shade tolerance · to −33 °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 Lansing, KS.

Soil in Lansing, KS

The soil mapped at the center of ZIP 66043 is Ladoga — silt loam, moderately well drained.

TextureSilt loama good balance for most vegetables
pH6.7neutral; most vegetables like 6.0–7.0
DrainageModerately well drainednatural drainage class
Organic matter2.5%moderate
Hydrologic groupCwater soaks in slowly
Farmland classprime farmlandUSDA classification

Map unit: Ladoga silt loam, 3 to 8 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 66043; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Lansing, KS

Summer high87 °Faverage high, July
Winter low15 °Faverage low, January
Hot days30days a year at 90 °F or more
Freezing nights137nights a year at 32 °F or less
Growing degree days3,647base 50 °F — the season’s usable heat
Longest day14 h 56 mindaylight on June 21
Shortest day9 h 24 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation39.1 inper year, rain and melted snow

Average high and low, by month

0°10°20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 38 °F, low 15 °F 38°15° JanFebruary: average high 43 °F, low 20 °F 43°20° FebMarch: average high 55 °F, low 29 °F 55°29° MarApril: average high 65 °F, low 41 °F 65°41° AprMay: average high 74 °F, low 51 °F 74°51° MayJune: average high 83 °F, low 62 °F 83°62° JunJuly: average high 87 °F, low 66 °F 87°66° JulAugust: average high 86 °F, low 64 °F 86°64° AugSeptember: average high 79 °F, low 55 °F 79°55° SepOctober: average high 68 °F, low 42 °F 68°42° OctNovember: average high 54 °F, low 30 °F 54°30° NovDecember: average high 42 °F, low 21 °F 42°21° Dec

Precipitation by month inches

0″1″2″3″4″5″6″January: 1.02 in precipitation 1.0 JanFebruary: 1.42 in precipitation 1.4 FebMarch: 2.59 in precipitation 2.6 MarApril: 3.83 in precipitation 3.8 AprMay: 5.55 in precipitation 5.5 MayJune: 4.99 in precipitation 5.0 JunJuly: 4.72 in precipitation 4.7 JulAugust: 4.24 in precipitation 4.2 AugSeptember: 4.10 in precipitation 4.1 SepOctober: 3.16 in precipitation 3.2 OctNovember: 2.01 in precipitation 2.0 NovDecember: 1.51 in precipitation 1.5 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Leavenworth 3sw, KS (4 mi away); precipitation: Leavenworth 3sw, KS (4 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 6b.

660486b
Leavenworth, KS · 4 mi
640286b
Farley, MO · 5 mi
640926b
Waldron, MO · 5 mi
661096b
Kansas City, KS · 7 mi
641686b
Kansas City, MO · 7 mi
641906b
Kansas City, MO · 7 mi
641956b
Kansas City, MO · 7 mi
660276b
Fort Leavenworth, KS · 8 mi

Kansas planting zones →

Questions about 66043

What planting zone is ZIP code 66043?

ZIP code 66043 (Lansing, KS) is in USDA hardiness zone 6b on the 2023 map: the coldest night of an average winter reaches −5 to 0 °F (−20.6 to −17.8 °C).

When is the last frost in Lansing, KS?

The median last spring frost (32 °F) near 66043 is April 19; after May 4 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Leavenworth 3sw station.

When is the first frost in Lansing, KS?

The median first fall frost near 66043 is October 19, giving a median frost-free growing season of 181 days.

When should I plant tomatoes in 66043?

Start tomato seeds indoors around Feb 22 – Mar 8 and set transplants outside around Apr 26 – May 10, one to three weeks after the median last frost.

How much rain and snow does 66043 get?

About 39.1 inches of precipitation a year (NOAA 1991–2020 normals, Leavenworth 3sw station).

How hot do summers get in Lansing, KS?

The average high peaks at 87 °F in July, with about 30 days a year at 90 °F or more.

What kind of soil does 66043 have?

The USDA soil survey maps Ladoga at the center of ZIP 66043: silt loam, moderately well drained, pH about 6.7 (neutral).

Did spring come early in Lansing, KS in 2026?

Spring leaf-out near 66043 came on Feb 25 in 2026, 21 days earlier than the 1991–2020 average (Mar 18), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Lansing, KS?

Intermediate onions: the longest day near 66043 is 14 h 56 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 66043 change?

Yes. The 2012 USDA map put 66043 in zone 6a; the 2023 map puts it in zone 6b. The newer map uses 1991–2020 data and more weather stations.