Frost Dates & Planting Calendars in Maryland
Typical last spring frost, first fall frost, and growing-season length for 156 cities in Maryland, based on NOAA 1991–2020 climate normals. Click a city for its full frost-date summary, monthly temperature chart, and 42-crop planting calendar.
| City | Last Spring Frost (typical) | First Fall Frost (typical) | Growing Season | USDA Zone |
|---|---|---|---|---|
| Baltimore | March 24 | November 21 | 244 days | 8a |
| Columbia | April 10 | October 31 | 204 days | 7b |
| Germantown | April 14 | October 29 | 196 days | 7b |
| Silver Spring | April 10 | November 1 | 202 days | 7b |
| Frederick | April 2 | November 6 | 218 days | 7a |
| Waldorf | April 3 | November 8 | 217 days | 7b |
| Glen Burnie | April 10 | October 31 | 204 days | 7b |
| Gaithersburg | April 1 | November 6 | 219 days | 7b |
| Rockville | April 1 | November 6 | 219 days | 7b |
| Ellicott City | April 10 | October 31 | 204 days | 7b |
| Dundalk | March 24 | November 21 | 244 days | 8a |
| Bethesda | April 9 | October 31 | 202 days | 7b |
| Bowie | April 22 | October 22 | 183 days | 7b |
| Towson | April 2 | November 7 | 220 days | 7b |
| South Bel Air | April 10 | October 30 | 201 days | 7b |
| Aspen Hill | April 1 | November 6 | 219 days | 7b |
| Wheaton | April 1 | November 6 | 219 days | 7b |
| Bel Air South | April 10 | October 30 | 201 days | 7b |
| Gwynn Oak | April 2 | November 7 | 220 days | 7b |
| Potomac | April 1 | November 6 | 219 days | 7b |
| Severn | April 10 | October 31 | 204 days | 7b |
| North Bethesda | April 1 | November 6 | 219 days | 7b |
| Catonsville | March 24 | November 21 | 244 days | 7b |
| Annapolis | March 27 | November 13 | 234 days | 8a |
| Hagerstown | April 11 | October 28 | 199 days | 7a |
| Essex | March 24 | November 21 | 244 days | 8a |
| Hanover | April 10 | October 31 | 204 days | 7b |
| Woodlawn | April 2 | November 7 | 220 days | 7b |
| Severna Park | March 27 | November 13 | 234 days | 8a |
| Odenton | April 10 | October 31 | 204 days | 7b |
| Saint Charles | April 3 | November 8 | 217 days | 7b |
| Clinton | April 3 | November 8 | 217 days | 7b |
| Oxon Hill-Glassmanor | April 3 | November 8 | 217 days | 8a |
| North Bel Air | April 10 | October 30 | 201 days | 7b |
| Olney | April 1 | November 6 | 219 days | 7b |
| Suitland-Silver Hill | April 3 | November 8 | 217 days | 7b |
| Chillum | March 29 | November 8 | 224 days | 7b |
| St. Charles | April 17 | October 27 | 195 days | 7b |
| Salisbury | April 3 | November 7 | 217 days | 7b |
| Randallstown | April 2 | November 7 | 220 days | 7a |
| College Park | April 10 | November 1 | 202 days | 7b |
| Montgomery Village | April 1 | November 6 | 219 days | 7b |
| Pikesville | April 2 | November 7 | 220 days | 7b |
| Parkville | April 2 | November 7 | 220 days | 7b |
| Owings Mills | April 2 | November 7 | 220 days | 7a |
| Bel Air North | April 10 | October 30 | 201 days | 7b |
| Eldersburg | April 2 | November 7 | 220 days | 7a |
| Carney | April 2 | November 7 | 220 days | 7b |
| South Gate | April 10 | October 31 | 204 days | 7b |
| Milford Mill | April 2 | November 7 | 220 days | 7b |
| West Elkridge | April 10 | October 31 | 204 days | 7b |
| Perry Hall | April 2 | November 7 | 220 days | 7b |
| Crofton | April 22 | October 22 | 183 days | 7b |
| Laurel | April 5 | November 9 | 218 days | 7b |
| South Laurel | April 5 | November 9 | 218 days | 7b |
| Reisterstown | April 2 | November 7 | 220 days | 7a |
| Suitland | March 29 | November 8 | 224 days | 7b |
| Edgewood | April 10 | October 30 | 201 days | 7b |
| Lochearn | April 2 | November 7 | 220 days | 7b |
| Middle River | March 24 | November 21 | 244 days | 8a |
| North Potomac | April 1 | November 6 | 219 days | 7b |
| Scaggsville | April 5 | November 9 | 218 days | 7b |
| Pasadena | April 10 | October 31 | 204 days | 8a |
| Greenbelt | April 10 | November 1 | 202 days | 7b |
| Hunt Valley | April 2 | November 7 | 220 days | 7b |
| Fort Washington | April 3 | November 8 | 217 days | 8a |
| Fairland | April 5 | November 9 | 218 days | 7b |
| Ilchester | April 10 | October 31 | 204 days | 7b |
| Arnold | March 27 | November 13 | 234 days | 8a |
| Landover | March 29 | November 8 | 224 days | 7b |
| Cockeysville | April 2 | November 7 | 220 days | 7b |
| Arbutus | March 24 | November 21 | 244 days | 7b |
| Cumberland | April 15 | October 24 | 190 days | 7a |
| Lake Shore | March 27 | November 13 | 234 days | 8a |
| Green Haven | April 10 | October 31 | 204 days | 8a |
| Rosedale | March 24 | November 21 | 244 days | 8a |
| Camp Springs | April 3 | November 8 | 217 days | 7b |
| Langley Park | April 10 | November 1 | 202 days | 7b |
| Greater Upper Marlboro | April 9 | October 29 | 203 days | 7b |
| Westminster | April 24 | October 20 | 177 days | 7a |
| Hyattsville | March 29 | November 8 | 224 days | 7b |
| Ballenger Creek | April 2 | November 6 | 218 days | 7b |
| Lanham-Seabrook | April 22 | October 22 | 183 days | 7b |
| Calverton | April 10 | November 1 | 202 days | 7b |
| Oxon Hill | April 3 | November 8 | 217 days | 8a |
| Takoma Park | March 29 | November 8 | 224 days | 7b |
| White Oak | April 10 | November 1 | 202 days | 7b |
| Glassmanor | April 3 | November 8 | 217 days | 8a |
| Seabrook | April 22 | October 22 | 183 days | 7b |
| Redland | April 1 | November 6 | 219 days | 7b |
| Frankford | March 24 | November 21 | 244 days | 7b |
| Beltsville | April 10 | November 1 | 202 days | 7b |
| Ferndale | April 10 | October 31 | 204 days | 7b |
| Easton | April 1 | November 7 | 220 days | 8a |
| Hillcrest Heights | April 3 | November 8 | 217 days | 7b |
| Maryland City | April 5 | November 9 | 218 days | 7b |
| Parole | March 27 | November 13 | 234 days | 8a |
| Lutherville-Timonium | April 2 | November 7 | 220 days | 7b |
| Elkton | April 7 | November 2 | 208 days | 7b |
| Elkridge | April 10 | October 31 | 204 days | 7b |
| Aberdeen | April 10 | October 30 | 201 days | 7b |
| East Riverdale | March 29 | November 8 | 224 days | 7b |
| Damascus | April 14 | October 29 | 196 days | 7b |
| Rossville | March 24 | November 21 | 244 days | 8a |
| Cloverly | April 5 | November 9 | 218 days | 7b |
| Adelphi | April 10 | November 1 | 202 days | 7b |
| Colesville | April 10 | November 1 | 202 days | 7b |
| Brooklyn Park | March 24 | November 21 | 244 days | 8a |
| Clarksburg | April 14 | October 29 | 196 days | 7a |
| Glenmont | April 1 | November 6 | 219 days | 7b |
| Havre de Grace | April 10 | October 30 | 201 days | 7b |
| Glenn Dale | April 22 | October 22 | 183 days | 7b |
| Kettering | April 9 | October 29 | 203 days | 7b |
| New Carrollton | April 22 | October 22 | 183 days | 7b |
| Canton | March 24 | November 21 | 244 days | 8a |
| Riviera Beach | April 10 | October 31 | 204 days | 8a |
| Joppatowne | April 10 | October 30 | 201 days | 7b |
| Kemp Mill | April 10 | November 1 | 202 days | 7b |
| Cambridge | April 1 | November 7 | 220 days | 8a |
| Forestville | April 9 | October 29 | 203 days | 7b |
| Overlea | April 2 | November 7 | 220 days | 7b |
| Green Valley | April 14 | October 29 | 196 days | 7a |
| Travilah | April 1 | November 6 | 219 days | 7b |
| Bennsville | April 3 | November 8 | 217 days | 7b |
| California | March 22 | November 26 | 248 days | 7b |
| Ocean Pines | April 7 | November 2 | 209 days | 7b |
| Lexington Park | March 29 | November 15 | 230 days | 8a |
| Chesapeake Ranch Estates-Drum Point | March 22 | November 26 | 248 days | 8a |
| Mays Chapel | April 2 | November 7 | 220 days | 7b |
| Walker Mill | March 29 | November 8 | 224 days | 7b |
| Mitchellville | April 22 | October 22 | 183 days | 7b |
| Summerfield | March 29 | November 8 | 224 days | 7b |
| Largo | April 9 | October 29 | 203 days | 7b |
| Halfway | April 11 | October 28 | 199 days | 7a |
| Rosaryville | April 9 | October 29 | 203 days | 7b |
| Accokeek | April 3 | November 8 | 217 days | 7b |
| Chesapeake Ranch Estates | March 22 | November 26 | 248 days | 8a |
| Linthicum | April 10 | October 31 | 204 days | 7b |
| Bel Air | April 10 | October 30 | 201 days | 7b |
| Lanham | April 22 | October 22 | 183 days | 7b |
| Timonium | April 2 | November 7 | 220 days | 7b |
| Coral Hills | March 29 | November 8 | 224 days | 7b |
| Lake Arbor | April 22 | October 22 | 183 days | 7b |
| Hamilton Hills | April 2 | November 7 | 220 days | 7b |
| Bladensburg | March 29 | November 8 | 224 days | 7b |
| Brock Hall | April 9 | October 29 | 203 days | 7b |
| Brooklyn | March 24 | November 21 | 244 days | 8a |
| Chevy Chase | April 9 | October 31 | 202 days | 7b |
| North Kensington | April 1 | November 6 | 219 days | 7b |
| White Marsh | March 24 | November 21 | 244 days | 8a |
| Fort George G Mead Junction | April 10 | October 31 | 204 days | 7b |
| Marlboro Village | April 9 | October 29 | 203 days | 7b |
| Mount Airy | April 14 | October 29 | 196 days | 7a |
| Fort Meade | April 10 | October 31 | 204 days | 7b |
| Friendly | April 3 | November 8 | 217 days | 7b |
| Urbana | April 14 | October 29 | 196 days | 7a |