Every state has its own growing rhythm — different frost windows, hardiness zones, rainfall, soils. Pick yours and see what plants fit, which natives belong, and what local conditions you should design around.
Massachusetts
Zones 5a-7b · Last frost Apr 10 - May 20
California
Zones 5a-11a · Last frost Jan 15 - May 15
Texas
Zones 6b-10a · Last frost Feb 1 - Apr 15
Florida
Zones 8a-11b · Last frost Jan 1 - Mar 15
New York
Zones 3b-7b · Last frost Apr 1 - May 30
Colorado
Zones 3a-7a · Last frost Apr 15 - Jun 15
Georgia
Zones 6b-9a · Last frost Mar 1 - Apr 15
Ohio
Zones 5b-6b · Last frost Apr 15 - May 15
Oregon
Zones 4b-9b · Last frost Mar 1 - Jun 15
Washington
Zones 4a-9a · Last frost Mar 1 - Jun 1
Alabama
Zones 7a-9a · Last frost Feb 28 - Apr 5
Alaska
Zones 1a-7b · Last frost May 1 - Jun 15
Arizona
Zones 4b-10b · Last frost Jan 15 - May 1
Arkansas
Zones 6b-8a · Last frost Mar 15 - Apr 15
Connecticut
Zones 5b-7a · Last frost Apr 15 - May 15
Delaware
Zones 7a-7b · Last frost Apr 1 - Apr 20
Hawaii
Zones 10a-13a · Last frost None
Idaho
Zones 3b-7a · Last frost Apr 15 - Jun 15
Illinois
Zones 5a-7a · Last frost Apr 5 - May 10
Indiana
Zones 5b-6b · Last frost Apr 10 - May 10
Iowa
Zones 4b-5b · Last frost Apr 20 - May 15
Kansas
Zones 5b-7a · Last frost Apr 5 - May 1
Kentucky
Zones 6a-7a · Last frost Apr 5 - Apr 25
Louisiana
Zones 8a-9b · Last frost Feb 15 - Mar 15
Maine
Zones 3b-6a · Last frost May 1 - Jun 5
Maryland
Zones 5b-8a · Last frost Mar 25 - May 5
Michigan
Zones 4a-6b · Last frost Apr 20 - May 30
Minnesota
Zones 3a-4b · Last frost Apr 25 - May 30
Mississippi
Zones 7b-9a · Last frost Feb 28 - Mar 30
Missouri
Zones 5b-7a · Last frost Apr 5 - Apr 25
Montana
Zones 3a-5b · Last frost May 1 - Jun 15
Nebraska
Zones 4a-5b · Last frost Apr 15 - May 10
Nevada
Zones 4a-9b · Last frost Mar 15 - Jun 1
New Hampshire
Zones 3b-6a · Last frost May 1 - Jun 1
New Jersey
Zones 6a-7b · Last frost Apr 1 - May 1
New Mexico
Zones 4b-8b · Last frost Mar 15 - May 30
North Carolina
Zones 5b-8b · Last frost Mar 10 - May 5
North Dakota
Zones 3a-4b · Last frost May 5 - Jun 1
Oklahoma
Zones 6b-8a · Last frost Mar 20 - Apr 15
Pennsylvania
Zones 5a-7a · Last frost Apr 10 - May 15
Rhode Island
Zones 6a-7a · Last frost Apr 10 - May 1
South Carolina
Zones 7a-9a · Last frost Mar 1 - Apr 10
South Dakota
Zones 3b-5a · Last frost May 1 - May 30
Tennessee
Zones 6a-7b · Last frost Mar 20 - Apr 20
Utah
Zones 4a-8a · Last frost Apr 10 - Jun 1
Vermont
Zones 3b-5b · Last frost May 5 - Jun 1
Virginia
Zones 5b-8a · Last frost Mar 20 - May 10
West Virginia
Zones 5a-6b · Last frost Apr 15 - May 15
Wisconsin
Zones 3b-5b · Last frost Apr 25 - May 25
Wyoming
Zones 3a-5b · Last frost May 10 - Jun 15