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

Planting zone for 84511 — Blanding, UT

ZIP code 84511 (Blanding, San Juan County) is in USDA zone 7a: the coldest winter night averages 0 to 5 °F. The median last spring frost is April 28 and the first fall frost October 21.

Where ZIP 84511 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.

Zone7a0 to 5 °F
Coldest night−17.8 to −15 °C
Last frostApr 28
First frostOct 21
2012 zone7a

Same zone as on the 2012 map. The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 7a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Blanding, UT…

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 Blanding, UT

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 28median — 50% chance of a later frost
Safe for tender plantsMay 16only 10% chance of frost after
First fall frostOctober 21median — 10% chance by Oct 6
Growing season174 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 14 and returns around November 1.

From the NOAA station Blanding, UT — 7 miles away, elevation 6,034 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 84511

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 17 – Mar 31
SpinachSow outdoors · Mar 17 – Apr 7
Broccoli, cabbageStart indoors · Feb 17 – Mar 3
Broccoli, cabbageTransplant · Apr 7 – Apr 21
Onion setsPlant outdoors · Mar 31 – Apr 14
PotatoesPlant outdoors · Apr 7 – Apr 21
LettuceSow outdoors · Mar 31 – Apr 14
Carrots, beetsSow outdoors · Apr 7 – Apr 21
TomatoesStart indoors · Mar 3 – Mar 17
TomatoesTransplant · May 5 – May 19
Peppers, eggplantStart indoors · Feb 17 – Mar 3
Peppers, eggplantTransplant · May 12 – May 26
BeansSow outdoors · May 5 – May 19
Sweet cornSow outdoors · May 5 – May 19
Cucumbers, squashSow outdoors · May 5 – May 19
Fall lettuce, spinachSow outdoors · Aug 26 – Sep 9
GarlicPlant cloves · Oct 7 – Nov 11
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 28) and first fall frost (Oct 21) 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 84511 came on Mar 2 — 19 days earlier than the 1991–2020 average (Mar 21).

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 Utah

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

Trees 30

American beech80 ft · blooms mid spring · low shade tolerance · to −44 °FArizona cypress50 ft · blooms spring · low shade tolerance · to −23 °FArizona walnut50 ft · blooms late spring · high shade tolerance · to −33 °Fbalsam poplar80 ft · blooms late spring · high shade tolerance · to −79 °Fblack locust60 ft · blooms spring · high shade tolerance · to −37 °Fblack walnut100 ft · blooms late spring · high shade tolerance · to −28 °F

Shrubs 112

alderleaf buckthorn3 ft · blooms late spring · low shade tolerance · to −33 °Falderleaf mountain mahogany15 ft · blooms late spring · medium shade tolerance · to −41 °Falpine laurel1 ft · blooms late spring · low shade tolerance · to −28 °FAmerican plum24 ft · blooms mid spring · high shade tolerance · to −38 °Fantelope bitterbrush6 ft · blooms early spring · medium shade tolerance · to −36 °FApache plume6 ft · blooms late spring · high shade tolerance · to −23 °F

Wildflowers & perennials 254

alkali buttercup1 ft · blooms late spring · low shade tolerance · to −38 °Falpine bistort1 ft · blooms mid spring · high shade tolerance · to −38 °Falpine mountainsorrel1 ft · blooms mid summer · medium shade tolerance · to −43 °FAmerican alpine speedwell1 ft · blooms summer · medium shade tolerance · to −28 °FAmerican bistort1.5 ft · blooms mid spring · high shade tolerance · to −38 °FAmerican licorice4 ft · blooms late spring · medium shade tolerance · to −38 °F

Grasses 154

alkali cordgrass3 ft · blooms late summer · high shade tolerance · to −38 °Falkali sacaton3 ft · blooms mid summer · high shade tolerance · to −38 °FAlpine Meadow-Foxtail0.5 ft · blooms mid spring · medium shade tolerance · to −33 °Falpine timothy1.4 ft · blooms late spring · medium shade tolerance · to −43 °Fanalogue sedge1.5 ft · blooms late spring · medium shade tolerance · to −38 °Farctic bluegrass2 ft · high shade tolerance · to −62 °F

Vines 3

trumpet creeper2 ft · blooms summer · high shade tolerance · to −13 °FVirginia creeper1 ft · blooms late spring · medium shade tolerance · to −28 °Fwestern white clematis1 ft · blooms mid summer · medium shade tolerance · to −38 °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 Blanding, UT.

Soil in Blanding, UT

The soil mapped at the center of ZIP 84511 is Rizno — fine sandy loam, well drained.

TextureFine sandy loamdrains and warms fast; dries out and needs more feeding
pH7.9alkaline; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter0.75%low — add compost
Hydrologic groupDwater soaks in very slowly
Farmland classNot prime farmlandUSDA classification

Map unit: Rizno-Ruinpoint-Rock outcrop complex.

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 84511; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Blanding, UT

Summer high89 °Faverage high, July
Winter low22 °Faverage low, January
Hot days48days a year at 90 °F or more
Freezing nights127nights a year at 32 °F or less
Growing degree days3,166base 50 °F — the season’s usable heat
Longest day14 h 45 mindaylight on June 21
Shortest day9 h 34 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation12.9 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 40 °F, low 22 °F 40°22° JanFebruary: average high 45 °F, low 26 °F 45°26° FebMarch: average high 55 °F, low 33 °F 55°33° MarApril: average high 62 °F, low 38 °F 62°38° AprMay: average high 73 °F, low 46 °F 73°46° MayJune: average high 84 °F, low 56 °F 84°56° JunJuly: average high 89 °F, low 62 °F 89°62° JulAugust: average high 86 °F, low 60 °F 86°60° AugSeptember: average high 78 °F, low 53 °F 78°53° SepOctober: average high 65 °F, low 42 °F 65°42° OctNovember: average high 51 °F, low 31 °F 51°31° NovDecember: average high 40 °F, low 23 °F 40°23° Dec

Precipitation by month inches

0″1″2″January: 1.56 in precipitation 1.6 JanFebruary: 1.33 in precipitation 1.3 FebMarch: 0.96 in precipitation 1.0 MarApril: 0.76 in precipitation 0.8 AprMay: 0.79 in precipitation 0.8 MayJune: 0.34 in precipitation 0.3 JunJuly: 1.06 in precipitation 1.1 JulAugust: 1.21 in precipitation 1.2 AugSeptember: 1.29 in precipitation 1.3 SepOctober: 1.41 in precipitation 1.4 OctNovember: 0.92 in precipitation 0.9 NovDecember: 1.26 in precipitation 1.3 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Blanding, UT (7 mi away); precipitation: Blanding, UT (7 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

6 of the 8 nearest ZIP codes are in a different zone — elevation and distance from water change winter lows quickly.

845347a
Montezuma Creek, UT · 23 mi
845356b
Monticello, UT · 23 mi
813246b
Dove Creek, CO · 23 mi
845127a
Bluff, UT · 26 mi
813316b
Pleasant View, CO · 28 mi
813356b
Yellow Jacket, CO · 38 mi
813206b
Cahone, CO · 39 mi
845317b
Mexican Hat, UT · 40 mi

Utah planting zones →

Questions about 84511

What planting zone is ZIP code 84511?

ZIP code 84511 (Blanding, UT) is in USDA hardiness zone 7a on the 2023 map: the coldest night of an average winter reaches 0 to 5 °F (−17.8 to −15 °C).

When is the last frost in Blanding, UT?

The median last spring frost (32 °F) near 84511 is April 28; after May 16 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Blanding station.

When is the first frost in Blanding, UT?

The median first fall frost near 84511 is October 21, giving a median frost-free growing season of 174 days.

When should I plant tomatoes in 84511?

Start tomato seeds indoors around Mar 3 – Mar 17 and set transplants outside around May 5 – May 19, one to three weeks after the median last frost.

How much rain and snow does 84511 get?

About 12.9 inches of precipitation a year (NOAA 1991–2020 normals, Blanding station).

How hot do summers get in Blanding, UT?

The average high peaks at 89 °F in July, with about 48 days a year at 90 °F or more.

What kind of soil does 84511 have?

The USDA soil survey maps Rizno at the center of ZIP 84511: fine sandy loam, well drained, pH about 7.9 (alkaline).

Did spring come early in Blanding, UT in 2026?

Spring leaf-out near 84511 came on Mar 2 in 2026, 19 days earlier than the 1991–2020 average (Mar 21), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Blanding, UT?

Intermediate onions: the longest day near 84511 is 14 h 45 min, so day-neutral types bulb best; long-day varieties may not bulb fully.