Deconstruct Sun

Hardiness Zone 11a: Temperature, States & Cities

In USDA zone 11a, the coldest night of a typical winter falls between 40 and 45 °F (4.4 to 7.2 °C).

11a
40 to 45 °F (4.4 to 7.2 °C)
average annual extreme minimum

Where is zone 11a?

On the 2023 USDA map, zone 11a appears in Florida, California, Hawaii.

Cities in zone 11a

Gardening in zone 11a

Pick perennials, shrubs and trees labeled for zone 11a 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.

Full sun6+ hoursof direct sun
Part sun4–6 hoursof direct sun
Part shade2–4 hoursof direct sun
Full shadeUnder 2 hoursof direct sun

← Zone 10b · Zone 11b →

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Questions

What is the temperature range for zone 11a?

In zone 11a, the average coldest winter night is 40 to 45 °F (4.4 to 7.2 °C). That is the average of each year’s lowest temperature from 1991 to 2020.

What is the difference between zone 11a and 11b?

Both are part of zone 11. The “a” half is 5 °F colder than the “b” half. Zone 11a averages 40 to 45 °F and zone 11b averages 45 to 50 °F.

Can I grow zone 11b plants in zone 11a?

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.