The 3 USDA planting zones in Duluth, Minnesota are Zone 4a, Zone 4b, and Zone 5a, according to USDA latest released data in 2023. The 3 planting zones in Duluth, Minnesota are listed below.
- Zone 4a: Zone 4a has an average annual extreme minimum temperature of -30°F to -25°F (-34.4°C to -31.7°C) and includes the Woodland neighborhood. It is the coldest growing conditions in Duluth, covering a small portion of the city’s northwestern region.
- Zone 4b: Zone 4b has an average annual extreme minimum temperature of -25°F to -20°F (-31.7°C to -28.9°C) and covers most of Duluth’s neighborhoods including Bayview Heights, Central Hillside, Chester Park, Cody, Congdon Park, Denfeld, Duluth Heights, East Hillside, Fairmount, Fond du Lac, Gary, Goat Hill, Hunter’s Park, Irving, Kenwood, Lakeside, Lester Park, Lincoln Park, Midway, Miller Hill, Morgan Park, Morley Heights, New Duluth, Norton Park, Parkview, Piedmont Heights, Riverside, Smithville, and Spirit Valley.
- Zone 5a: Zone 5a has an average annual extreme minimum temperature of -20°F to -15°F (-28.9°C to -26.1°C) and includes Canal Park, Downtown Duluth, Endion, North Shore, Oneota, Park Point, and Rice’s Point. This milder zone follows the Lake Superior shoreline, demonstrating the moderating effect that the large body of water has on the local climate and creating more favorable growing conditions.
Locate and verify your Duluth, Minnesota, USDA zone using our three tools given below, zipcode to planting zone search tool, interactive map, or planting zone table. ( Find Dultuh First and Last Frost Dates)
Duluth Planting Zones by ZipCode
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Duluth Planting Zones Map
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Duluth Planting Zones Table
Below given table lists all the Duluth locations with their USDA Hardiness Zones.
| Duluth Location | Planting Zone |
|---|---|
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Duluth Growing Zones
The 3 USDA planting zones in Duluth, Minnesota are Zone 4a, Zone 4b, and Zone 5a.
Zone 4a
Zone 4a (-30°F to -25°F / -34.4°C to -31.7°C) in Duluth includes the Woodland neighborhood. It supports cold-hardy vegetables like Asparagus (Asparagus officinalis) and Rhubarb (Rheum rhabarbarum), along with ornamental plants like Helleborus (Helleborus x hybridus) and Yarrow (Achillea millefolium).
Zone 4b
Zone 4b (-25°F to -20°F / -31.7°C to -28.9°C) covers most of Duluth’s neighborhoods. Suitable plants for zone 4b include Kale (Brassica oleracea), Coneflower (Echinacea spp.), and Redtwig Dogwood (Cornus sericea). Neighborhoods in this zone include Bayview Heights, Central Hillside, Chester Park, and others.
Zone 5a
Zone 5a (-20°F to -15°F / -28.9°C to -26.1°C) in Duluth includes areas like Canal Park and Downtown Duluth. This milder zone supports Tomatoes (Solanum lycopersicum), Peonies (Paeonia spp.), and Bee Balm (Monarda spp.). The moderating effect of Lake Superior creates favorable conditions for these plants.