2019 Catalog

75 USDA PLANT HARDINESS ZONE MAP

Seattle

OLYMPIA

Missouri

Portland

Columbia

SALEM

HELENA

AUGUSTA

BISMARCK

MONTPELIER

CONCORD

SAINT PAUL

BOISE

BOSTON

ALBANY

PIERRE

PROVIDENCE

Buffalo

Mississippi

HARTFORD

LANSING

MADISON

Detroit

NewYork

Missouri

SALT LAKE CITY

Chicago

TRENTON

DES MOINES

HARRISBURG

Philadelphia

CARSON CITY

CHEYENNE

Pittsburgh

SACRAMENTO

DOVER

LINCOLN

COLUMBUS

San Francisco

ANNAPOLIS

INDIANAPOLIS

WASHINGTON D.C.

DENVER

SPRINGFIELD

Ohio

CHARLESTON

TOPEKA

RICHMOND

JEFFERSON CITY

SaintLouis

FRANKFORT

Las Vegas

Wichita

Colorado

RALEIGH

NASHVILLE

Los Angeles

Charlotte

SANTAFE

OKLAHOMA CITY

LITTLE ROCK

COLUMBIA

San Diego

PHOENIX

ATLANTA

Birmingham

Mississippi

Tucson

MONTGOMERY

Dallas

JACKSON

TALLAHASSEE

BATON ROUGE

RioGrande

AUSTIN

NewOrleans

Houston

San Antonio

Tampa

Miami

Average Annual Extreme Minimum Temperature 1976-2005

Temp (F)

Zone

Temp (F)

Zone

Temp (F)

Zone

1a

10a

-60 to -55

30 to 35

5b

-15 to -10

1b

10b

-55 to -50

35 to 40

6a

-10 to -5

2a

11a

-50 to -45

40 to 45

6b

-5 to 0

11b

2b

45 to 50

-45 to -40

7a

0 to 5

12a

3a

-40 to -35

50 to 55

7b

5 to 10

3b

-35 to -30

55 to 60

8a

12b

10 to 15

13a

4a

-30 to -25

60 to 65

8b

15 to 20

13b

4b

-25 to -20

65 to 70

9a

20 to 25

5a

-20 to -15

9b

25 to 30