The Snake River Plain spans USDA hardiness zones 5a-7a — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
A broad volcanic plain of deep ash-rich soils and long summer days, irrigated from the Snake River — the classic Idaho potato, hop, and sugar-beet country. On paper, potato, apple, hop, and cherry all suit these conditions — on the ground, soil, sun, and drainage make the final call.
The Snake River Plain spans Idaho. Its footprint follows the EPA Level III ecoregion boundary; the counties linked below are representative of the region, not an exhaustive list.
Your yard isn't the whole Snake River Plain.
The Snake River Plain spans USDA zones 5a-7a, but your parcel sits in exactly one — and slope, tree cover, and low spots nudge it further. Enter your address and we'll score 1,112 plants against your land's actual soil, sun, and frost.
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
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Quick Facts
USDA Zones
5a-7a
States
1
Counties
14
Defined by
Ecoregion
Hardiness Zone Range
What Grows in the Snake River Plain
Plants matched to the Snake River Plain's USDA zones 5a-7a — each links to its full growing profile.
Native Plants Suited to the Snake River Plain
US-native plants (USDA PLANTS, Lower 48) whose hardiness range overlaps the Snake River Plain’s USDA zones 5a-7a. Zone overlap is a starting filter, not a range map — for plants documented native to your county, your state’s Cooperative Extension or a native-plant society is the authority.
Safe to Grow Here?
What the federal record shows across the Snake River Plain — and how to grow with it.
A growing region spans many local records, and contamination is a per-place fact — not a regional verdict. Nationwide we track 1.8M documented sites across 9 federal source types; open the map outlined to the Snake River Plain to see exactly what's on record where you grow.
Sources: EPA, USGS — 1.8M documented sites tracked nationwide across 9 federal source types.
Your Specific Parcel Matters
the Snake River Plain Average
- ●USDA Zones 5a-7a
- ●Generic soil type for the area
- ●State-average frost dates
YOUR Parcel
- ✓Your exact hardiness zone
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your parcel in the Snake River Plain
Pull a site-specific report for your exact address in the Snake River Plain — soil, sun, drainage, frost risk, contamination, and scored plant recommendations.
Three things about your exact spot that zone averages miss:
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources analyzed in seconds
Key Growing Facts for the Snake River Plain
- USDA Hardiness Zones: 5a-7a (USDA PHZM 2023, aggregated across the region)
- States: Idaho
- Counties covered: 14
- Region boundary: an EPA Level III ecoregion (an area sharing climate, soils, and vegetation)
Zone data: USDA ARS Plant Hardiness Zone Map 2023. Region boundary: curated county clusters and EPA Level III ecoregions. County boundaries: US Census TIGER/Line 2025.
Frequently Asked Questions
What hardiness zone is the Snake River Plain?
The Snake River Plain spans USDA hardiness zones 5a-7a, aggregated from the USDA Agricultural Research Service Plant Hardiness Zone Map 2023 across the region's counties. Zones reflect average annual extreme minimum temperatures from 1991–2020 data.
What grows well in the Snake River Plain?
The Snake River Plain's conditions suit plants such as Potato, Apple, Hop, Cherry, Lentil. For site-specific recommendations scored against your parcel's soil, drainage, and sun data, run the Growable Ground report for your address.
Which states does the Snake River Plain cover?
The Snake River Plain spans Idaho. Each state's full growing guide is linked below.