When to plant Sweet corn in Maryland
In spring, from Mar 15 – May 1 in Baltimore to Apr 25 – June 15 in Westminster.
In fall, June 1 – Aug 1.
USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.
| Place | Spring | Fall |
|---|---|---|
| Aberdeen | Apr 10 – June 1 | June 1 – Aug 1 |
| Annapolis | Mar 25 – May 15 | June 1 – Aug 15 |
| Baltimore | Mar 15 – May 1 | June 1 – Sept 1 |
| Bel Air | Apr 10 – June 1 | June 1 – Aug 1 |
| Bowie | Apr 25 – June 15 | June 1 – July 20 |
| Cambridge | Mar 25 – May 15 | June 1 – Aug 15 |
| College Park | Apr 10 – June 1 | June 1 – Aug 1 |
| Cumberland | Apr 10 – June 1 | June 1 – July 20 |
| Easton | Mar 25 – May 15 | June 1 – Aug 15 |
| Elkton | Apr 10 – June 1 | June 1 – Aug 1 |
| Frederick | Mar 25 – May 15 | June 1 – Aug 15 |
| Gaithersburg | Mar 25 – May 15 | June 1 – Aug 15 |
| Greenbelt | Apr 10 – June 1 | June 1 – Aug 1 |
| Hagerstown | Apr 10 – June 1 | June 1 – Aug 1 |
| Havre de Grace | Apr 10 – June 1 | June 1 – Aug 1 |
| Hyattsville | Mar 25 – May 15 | June 1 – Aug 15 |
| La Plata | Apr 25 – June 15 | June 1 – Aug 1 |
| Laurel | Apr 10 – June 1 | June 1 – Aug 15 |
| New Carrollton | Apr 25 – June 15 | June 1 – July 20 |
| Rockville | Mar 25 – May 15 | June 1 – Aug 15 |
| Salisbury | Mar 25 – May 15 | June 1 – Aug 15 |
| Takoma Park | Mar 25 – May 15 | June 1 – Aug 15 |
| Westminster | Apr 25 – June 15 | June 1 – July 20 |
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), tables 4 and 5. Frost dates: NOAA U.S. Climate Normals 1991–2020. “—” means the place's frost date is outside the table. The full USDA table for sweet corn.