USDA Zone 6b — Garden & Frost Dates for Hartford, CT (06101)
This is the local garden report for ZIP code 06101 (Hartford, CT). 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 6b mean for Hartford?
Zone 6b is the USDA Plant Hardiness Zone for ZIP 06101, based on the 30-year (1991-2020) average annual extreme minimum winter temperature. Perennial plants labeled for zone 6b or lower should survive a typical winter here. The last spring frost averages 04-18 and the first fall frost averages 10-18, giving roughly 183 frost-free growing days — the window that most vegetables need to go from seed to harvest.
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