Maryland planting zones & frost dates
USDA hardiness zones in Maryland go from 7a to 8a. Pick your city for its average frost dates and a planting calendar, or search by ZIP code.
| City | Zone | Avg. last frost | Avg. first frost |
|---|---|---|---|
| Aberdeen | 7b | Apr 10 | Oct 30 |
| Accokeek | 7b | Apr 3 | Nov 8 |
| Adelphi | 7b | Apr 10 | Nov 1 |
| Annapolis | 8a | Mar 27 | Nov 13 |
| Arbutus | 7b | Mar 24 | Nov 21 |
| Arnold | 8a | Mar 27 | Nov 13 |
| Aspen Hill | 7b | Apr 1 | Nov 6 |
| Ballenger Creek | 7b | Apr 2 | Nov 6 |
| Baltimore | 8a | Mar 24 | Nov 21 |
| Bel Air | 7b | Apr 10 | Oct 30 |
| Bel Air North | 7b | Apr 10 | Oct 30 |
| Bel Air South | 7b | Apr 10 | Oct 30 |
| Beltsville | 7b | Apr 10 | Nov 1 |
| Bennsville | 7b | Apr 3 | Nov 8 |
| Bethesda | 7b | Apr 9 | Oct 31 |
| Bowie | 7b | Apr 22 | Oct 22 |
| Brooklyn Park | 8a | Mar 24 | Nov 21 |
| California | 7b | Mar 22 | Nov 26 |
| Calverton | 7b | Apr 10 | Nov 1 |
| Cambridge | 8a | Apr 1 | Nov 7 |
| Camp Springs | 7b | Apr 3 | Nov 8 |
| Canton | 8a | Mar 24 | Nov 21 |
| Carney | 7b | Apr 2 | Nov 7 |
| Catonsville | 7b | Mar 24 | Nov 21 |
| Chesapeake Ranch Estates | 8a | Mar 22 | Nov 26 |
| Chesapeake Ranch Estates-Drum Point | 8a | Mar 22 | Nov 26 |
| Chillum | 7b | Mar 29 | Nov 8 |
| Clarksburg | 7a | Apr 14 | Oct 29 |
| Clinton | 7b | Apr 3 | Nov 8 |
| Cloverly | 7b | Apr 5 | Nov 9 |
| Cockeysville | 7b | Apr 2 | Nov 7 |
| Colesville | 7b | Apr 10 | Nov 1 |
| College Park | 7b | Apr 10 | Nov 1 |
| Columbia | 7b | Apr 10 | Oct 31 |
| Crofton | 7b | Apr 22 | Oct 22 |
| Cumberland | 7a | Apr 15 | Oct 24 |
| Damascus | 7b | Apr 14 | Oct 29 |
| Dundalk | 8a | Mar 24 | Nov 21 |
| East Riverdale | 7b | Mar 29 | Nov 8 |
| Easton | 8a | Apr 1 | Nov 7 |
| Edgewood | 7b | Apr 10 | Oct 30 |
| Eldersburg | 7a | Apr 2 | Nov 7 |
| Elkridge | 7b | Apr 10 | Oct 31 |
| Elkton | 7b | Apr 7 | Nov 2 |
| Ellicott City | 7b | Apr 10 | Oct 31 |
| Essex | 8a | Mar 24 | Nov 21 |
| Fairland | 7b | Apr 5 | Nov 9 |
| Ferndale | 7b | Apr 10 | Oct 31 |
| Forestville | 7b | Apr 9 | Oct 29 |
| Fort Washington | 7b | Apr 3 | Nov 8 |
| Frederick | 7b | Apr 2 | Nov 6 |
| Gaithersburg | 7b | Apr 1 | Nov 6 |
| Germantown | 7b | Apr 14 | Oct 29 |
| Glassmanor | 8a | Apr 3 | Nov 8 |
| Glen Burnie | 7b | Apr 10 | Oct 31 |
| Glenmont | 7b | Apr 1 | Nov 6 |
| Glenn Dale | 7b | Apr 22 | Oct 22 |
| Greater Upper Marlboro | 7b | Apr 9 | Oct 29 |
| Green Haven | 8a | Apr 10 | Oct 31 |
| Green Valley | 7a | Apr 14 | Oct 29 |
| Greenbelt | 7b | Apr 10 | Nov 1 |
| Gwynn Oak | 7b | Apr 2 | Nov 7 |
| Hagerstown | 7a | Apr 11 | Oct 28 |
| Halfway | 7a | Apr 11 | Oct 28 |
| Hanover | 7b | Apr 10 | Oct 31 |
| Havre de Grace | 7b | Apr 10 | Oct 30 |
| Hillcrest Heights | 7b | Apr 3 | Nov 8 |
| Hunt Valley | 7b | Apr 2 | Nov 7 |
| Hyattsville | 7b | Mar 29 | Nov 8 |
| Ilchester | 7b | Apr 10 | Oct 31 |
| Joppatowne | 7b | Apr 10 | Oct 30 |
| Kemp Mill | 7b | Apr 10 | Nov 1 |
| Kettering | 7b | Apr 9 | Oct 29 |
| Lake Shore | 8a | Mar 27 | Nov 13 |
| Landover | 7b | Mar 29 | Nov 8 |
| Langley Park | 7b | Apr 10 | Nov 1 |
| Lanham | 7b | Apr 22 | Oct 22 |
| Lanham-Seabrook | 7b | Apr 22 | Oct 22 |
| Largo | 7b | Apr 9 | Oct 29 |
| Laurel | 7b | Apr 5 | Nov 9 |
| Lexington Park | 8a | Mar 29 | Nov 15 |
| Linthicum | 7b | Apr 10 | Oct 31 |
| Lochearn | 7b | Apr 2 | Nov 7 |
| Lutherville-Timonium | 7b | Apr 2 | Nov 7 |
| Maryland City | 7b | Apr 5 | Nov 9 |
| Mays Chapel | 7b | Apr 2 | Nov 7 |
| Middle River | 8a | Mar 24 | Nov 21 |
| Milford Mill | 7b | Apr 2 | Nov 7 |
| Mitchellville | 7b | Apr 22 | Oct 22 |
| Montgomery Village | 7b | Apr 1 | Nov 6 |
| New Carrollton | 7b | Apr 22 | Oct 22 |
| North Bethesda | 7b | Apr 1 | Nov 6 |
| North Potomac | 7b | Apr 1 | Nov 6 |
| Ocean Pines | 7b | Apr 7 | Nov 2 |
| Odenton | 7b | Apr 10 | Oct 31 |
| Olney | 7b | Apr 1 | Nov 6 |
| Overlea | 7b | Apr 2 | Nov 7 |
| Owings Mills | 7a | Apr 2 | Nov 7 |
| Oxon Hill | 7b | Apr 3 | Nov 8 |
| Oxon Hill-Glassmanor | 7b | Apr 3 | Nov 8 |
| Parkville | 7b | Apr 2 | Nov 7 |
| Parole | 7b | Mar 27 | Nov 13 |
| Pasadena | 8a | Apr 10 | Oct 31 |
| Perry Hall | 7b | Apr 2 | Nov 7 |
| Pikesville | 7b | Apr 2 | Nov 7 |
| Potomac | 7b | Apr 1 | Nov 6 |
| Randallstown | 7a | Apr 2 | Nov 7 |
| Reisterstown | 7a | Apr 2 | Nov 7 |
| Riviera Beach | 8a | Apr 10 | Oct 31 |
| Rockville | 7b | Apr 1 | Nov 6 |
| Rosaryville | 7b | Apr 9 | Oct 29 |
| Rosedale | 7b | Mar 24 | Nov 21 |
| Rossville | 8a | Mar 24 | Nov 21 |
| Saint Charles | 7b | Apr 3 | Nov 8 |
| Salisbury | 7b | Apr 3 | Nov 7 |
| Scaggsville | 7b | Apr 5 | Nov 9 |
| Seabrook | 7b | Apr 22 | Oct 22 |
| Severn | 7b | Apr 10 | Oct 31 |
| Severna Park | 8a | Mar 27 | Nov 13 |
| Silver Spring | 7b | Apr 10 | Nov 1 |
| South Gate | 7b | Apr 10 | Oct 31 |
| South Laurel | 7b | Apr 5 | Nov 9 |
| St. Charles | 7b | Apr 17 | Oct 27 |
| Suitland | 7b | Mar 29 | Nov 8 |
| Suitland-Silver Hill | 7b | Apr 3 | Nov 8 |
| Summerfield | 7b | Mar 29 | Nov 8 |
| Takoma Park | 7b | Mar 29 | Nov 8 |
| Towson | 7b | Apr 2 | Nov 7 |
| Travilah | 7b | Apr 1 | Nov 6 |
| Waldorf | 7b | Apr 3 | Nov 8 |
| Walker Mill | 7b | Mar 29 | Nov 8 |
| West Elkridge | 7b | Apr 10 | Oct 31 |
| Westminster | 7a | Apr 24 | Oct 20 |
| Wheaton | 7b | Apr 1 | Nov 6 |
| White Oak | 7b | Apr 10 | Nov 1 |
| Woodlawn | 7b | Apr 2 | Nov 7 |
Cities with 10,000+ residents. Data: USDA Plant Hardiness Zone Map 2023 and NOAA Climate Normals 1991–2020. Sources and method.