Deconstruct SunHardiness Zone 13a: Temperature, States & Cities
In USDA zone 13a, the coldest night of a typical winter falls between 60 and 65 °F (15.6 to 18.3 °C).
average annual extreme minimum
Where is zone 13a?
On the 2023 USDA map, zone 13a appears in Puerto Rico.
Cities in zone 13a
Gardening in zone 13a
Pick perennials, shrubs and trees labeled for zone 13a or a lower number. Then match the light: every plant tag also lists full sun, part sun or shade, and that depends on the exact spot, not the zone.
Check your zone
Zone checked. Now measure the sun.
Deconstruct Sun shows how many hours of direct sun one exact spot gets, today and in every season. Free on iPhone.
Questions
What is the temperature range for zone 13a?
In zone 13a, the average coldest winter night is 60 to 65 °F (15.6 to 18.3 °C). That is the average of each year’s lowest temperature from 1991 to 2020.
What is the difference between zone 13a and 13b?
Both are part of zone 13. The “a” half is 5 °F colder than the “b” half. Zone 13a averages 60 to 65 °F and zone 13b averages 65 to 70 °F.
Can I grow zone 13b plants in zone 13a?
A plant rated for a warmer zone may survive a mild winter, but one hard freeze can kill it. Choose plants rated for your zone or colder for permanent plantings, and treat warmer-zone plants as annuals or grow them in pots you can move.
This is not the official USDA Plant Hardiness Zone Map. Zones are derived from the official 2023 dataset, resampled to about 2 km.