Delaware Planting Calendar
Frost dates, growing zones, and planting dates for Delaware gardeners.
Zone 7a
Zone 7b
The Short Answer
Delaware spans USDA zones 7a through 7b, which means planting dates vary significantly across the state. Northern Delaware has an average last frost around Apr 10 - Apr 25, while Southern Delaware sees its last frost around Apr 1 - Apr 15. Use our homepage tool with your zip code for dates specific to your exact location.
Delaware Frost Dates by Region
Moderate climate with maritime influence. Good growing conditions for a wide range of vegetables.
| Region | Zones | Last Frost (Spring) | First Frost (Fall) |
|---|---|---|---|
| Northern Delaware | 7a | Apr 10 - Apr 25 | Oct 10 - Oct 25 |
| Southern Delaware | 7b | Apr 1 - Apr 15 | Oct 20 - Nov 5 |
Soil & Growing Conditions
Sandy soils in south, clay loam in north. Generally well-drained. Slightly acidic.
What to Plant in Delaware
Delaware's four-season climate supports nearly everything in the garden. Your balanced growing conditions are the envy of both hotter and colder states. Here are the best performers:
Warm-Season Stars
Cool-Season & Year-Round
Flowers, Herbs & More
Browse all 100 plants — or enter your zip code for personalized planting dates.
Neighboring States
Gardeners near state borders may find useful information in neighboring state guides:
Alabama
Alaska
Arizona
Arkansas
California
Colorado
Connecticut
Florida
Georgia
Hawaii
Idaho
Illinois
Indiana
Iowa
Kansas
Kentucky
Louisiana
Maine
Maryland
Massachusetts
Michigan
Minnesota
Mississippi
Missouri
Montana
Nebraska
Nevada
New Hampshire
New Jersey
New Mexico
New York
North Carolina
North Dakota
Ohio
Oklahoma
Oregon
Pennsylvania
Rhode Island
South Carolina
South Dakota
Tennessee
Texas
Utah
Vermont
Virginia
Washington
West Virginia
Wisconsin
Wyoming
Last reviewed: March 29, 2026