USDA hardiness zones — 2023 map
South Dakota hardiness zones — USDA planting zone map + what to grow
Zones 3b-5a · most of South Dakota is zone 4b · Midwest region
South DakotaUSDA zone range & map
On the 2023 USDA Plant Hardiness Zone Map, South Dakota spans zones 3b-5a. The map shades the state from the northern plains near North Dakota (zone 3b) through to the southeast around Sioux Falls and the Black Hills foothills (zone 5a). The single most common half-zone across the populated state is zone 4b — that is the figure to use if you only remember one number for South Dakota. South Dakota is a cold, windy, short-season plains state. Fast-maturing, cold-hardy varieties are the rule statewide.
| USDA zone range | Zones 3b-5a |
|---|---|
| Most common zone | Zone 4b |
| Coldest area | the northern plains near North Dakota (zone 3b) |
| Warmest area | the southeast around Sioux Falls and the Black Hills foothills (zone 5a) |
| Average last spring frost | mid-May |
| Average first fall frost | late September |
Source: USDA 2023 Plant Hardiness Zone Map (1991-2020 normals). Frost averages: NOAA/NCEI 1991-2020 climate normals. Local ZIP-level zones and frost dates can differ from these statewide figures.
South Dakota hardiness zones by major city
Zones shift across South Dakota with elevation and distance from the coast. Here is the 2023 USDA half-zone for the largest cities:
| City | USDA zone |
|---|---|
| Sioux Falls | Zone 5a |
| Rapid City | Zone 5a |
| Aberdeen | Zone 4a |
| Pierre | Zone 4b |
Need your exact zone? Run the ZIP-code zone finder for a precise half-zone and frost dates for your address.
ZIP-code zones in South Dakota
Statewide ranges hide a lot. Tap your area for its exact USDA half-zone, last and first frost dates, and what to plant now:
- Brookings 57006 — Zone 4b
- Sioux Falls (East) 57103 — Zone 5a
- Sioux Falls 57104 — Zone 5a
- Sioux Falls (West) 57106 — Zone 5a
- Aberdeen 57401 — Zone 4b
- Pierre 57501 — Zone 4b
- Rapid City 57701 — Zone 5a
- Rapid City (West) 57702 — Zone 5a
What South Dakota's zone range means for planting
Your hardiness zone tells you which perennials, shrubs, and trees will survive a typical South Dakota winter, and it anchors when tender crops can go outside. Because South Dakota spans 3b-5a, two gardeners in the same state can have very different planting calendars.
- Pick perennials hardy to your local zone. Across most of South Dakota that means at least zone 4b; gardeners in the northern plains near North Dakota (zone 3b) should choose hardier plants.
- Anchor tender crops to your frost dates. With a last spring frost around mid-May and first fall frost around late September, set out tomatoes, peppers, and basil after the last frost and protect them before the first.
- Adjust for your microclimate. Urban heat, a south-facing slope, or a cold valley pocket can shift your effective zone and frost dates by a half-zone or more from the statewide figure.
Find your exact zone in South Dakota
The 3b-5a range is statewide. Growli pins your hardiness zone and frost dates to your exact ZIP code and sends a push notification before any forecast frost night for your saved location.
Frequently asked questions
What hardiness zone is South Dakota?
South Dakota spans USDA hardiness zones 3b-5a on the 2023 USDA Plant Hardiness Zone Map. The most common zone — covering the largest share of the populated state — is zone 4b. The coldest areas are the northern plains near North Dakota (zone 3b) and the warmest are the southeast around Sioux Falls and the Black Hills foothills (zone 5a).
When is the last frost in South Dakota?
Across most of South Dakota the average last spring frost falls around mid-May and the first fall frost around late September. These are statewide averages — colder, higher areas run later in spring and earlier in fall, so check a ZIP-level estimate for your exact spot.
What grows well in South Dakota?
South Dakota is a cold, windy, short-season plains state. Fast-maturing, cold-hardy varieties are the rule statewide. Match plants to your local half-zone within the 3b-5a range: choose varieties hardy to at least zone 4b for reliable overwintering, and time tender crops around your local frost dates. The zone 4 planting guide lists vegetables, fruit, and ornamentals suited to most of the state.
Why does South Dakota have more than one hardiness zone?
Hardiness zones track the average annual coldest temperature, which changes with latitude, elevation, distance from water, and urban heat. That is why South Dakota ranges from the northern plains near North Dakota (zone 3b) to the southeast around Sioux Falls and the Black Hills foothills (zone 5a) — a span of 3b-5a — even though it is a single state.
Did South Dakota's hardiness zone change in 2023?
The USDA updated the Plant Hardiness Zone Map in November 2023 using 1991-2020 climate data. About half the country, including parts of South Dakota, shifted to the next warmer half-zone versus the 2012 map. The 3b-5a range here reflects the current 2023 map. Always confirm your address against the official USDA map for plant-survival decisions.