🌱 Free USDA zone, frost dates & planting calendar, by ZIP About & data sources
My Planting Zone know your zone
Zones: 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b 12a 12b 13a 13b

About & Methodology

My Planting Zone helps home gardeners answer three questions fast: what USDA zone am I in, when are my frost dates, and when should I plant.

Data sources

  • Hardiness zones: USDA 2023 Plant Hardiness Zone Map (ZIP → zone).
  • Frost dates: NOAA NCEI 1991-2020 U.S. Climate Normals (average last spring / first fall freeze), matched to your nearest weather station.

How planting dates are computed

Each crop has research-based offsets relative to your average last spring frost, e.g. tomatoes start indoors ~6-8 weeks before last frost and transplant 1-2 weeks after. We apply those offsets to your zone/city frost dates to build the calendar.

Important

These are averages for planning. Your microclimate, the current season, and the weather vary. Always check a local forecast before planting tender crops.

Zone data: USDA 2023 Plant Hardiness Zone Map · Frost dates: NOAA NCEI 1991-2020 Climate Normals