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Metro areas

Gardening guides for 388 US metro areas. Each gives the hardiness zone or zones, the spread of freeze dates across every NOAA station serving the metro, a spring calendar built from those stations, and the tools to work out your own dates.

What this list is, and is not

91 of these metros fall entirely inside one hardiness zone, so their page can state it outright. The other 297 span several — Los Angeles and Riverside span 8 each — and those pages give the split across zones instead of picking the largest and rounding everyone else into it.

Metro areas do not cover the country. Only 45% of US ZIP codes fall inside one at all; the rest are in smaller towns and rural counties, which have no page here.

Metro pages do not cover the country, and it is worth being exact. These 388 pages cover 18,275 ZIP codes, about 45.1% of the country. The hardiness-zone tool answers all 40,502 US ZIP codes, whether they are in a metro or not, and it is the right starting point if your own is not listed here.

AK

AL

AR

AZ

CA

CO

DC

DE

FL

GA

HI

IA

ID

IL

IN

KS

KY

LA

MA

MD

ME

MI

MN

MO

MS

MT

NC

ND

NE

NH

NJ

NM

NV

NY

OH

OK

OR

PA

PR

RI

SC

SD

TN

TX

UT

VA

VT

WA

WI

WV

WY