USDA Zone 5a — Garden & Frost Dates for Saint Paul, MN (55118)
This is the local garden report for ZIP code 55118 (Saint Paul, MN). It pairs the official USDA 2023 hardiness zone with NOAA-based frost dates so you can plan seeds, transplants, and fall crops with real numbers for your neighborhood.
What does zone 5a mean for Saint Paul?
Zone 5a is the USDA Plant Hardiness Zone for ZIP 55118, based on the 30-year (1991-2020) average annual extreme minimum winter temperature. Perennial plants labeled for zone 5a or lower should survive a typical winter here. The last spring frost averages 05-01 and the first fall frost averages 10-01, giving roughly 153 frost-free growing days — the window that most vegetables need to go from seed to harvest.
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