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USDA hardiness zone 13b, 65°F to 70°F

Planting Zone 13b: Where It Is and What Grows

The coldest night of the winter averages 65°F to 70°F in zone 13b. Where it is on the 2023 USDA map, the towns in it and the zones either side.

26 ZIP codes

Where zone 13b is

Zone 13b covers 26 ZIP codes, all in Puerto Rico.

Cities and towns in zone 13b

Tap a town for its own frost dates and this month’s jobs; a hill or a valley a few miles off can be half a zone either side.

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Either side

The zones next to 13b

Each half zone is five degrees. Zone 13a is five degrees colder at 60°F to 65°F.

Zone 13a, colder60°F to 65°F
Questions

Zone 13b questions

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Your own dates, by ZIP

Find your zone by ZIPYour zone, your frost dates and this month’s jobs for your address.Seed starting calendarWhen to start each vegetable indoors, by ZIP.Frost dates by ZIPYour last spring and first fall frost, with the odds either side.First frost forecastWhen the first fall frost usually arrives, state by state.Soil temperatureWhen the ground is warm enough to sow.When to plant garlicThe fall planting window by ZIP.

Sources. USDA Plant Hardiness Zone Map, ZIP code tables (2023 and 2012), PRISM Climate Group, Oregon State University; USDA Plant Hardiness Zone Map; USDA Unveils Updated Plant Hardiness Zone Map (USDA Agricultural Research Service, November 15, 2023); NOAA NCEI U.S. Climate Normals 1991-2020, annual/seasonal, by station (v1.0.1); NC State Extension Gardener Plant Toolbox. Zone frost dates are the medians of the NOAA 1991 to 2020 station normals inside the zone.