When to Plant Corn in Maryland
In a typical Maryland location, sow outdoors Apr 3 – Apr 17. Across the state, the outdoor planting window starts as early as Mar 22 in California and as late as Apr 24 in Westminster.
Direct sow at last frost to 2 weeks after, once soil reaches 60F; does not transplant well. Succession sow every 2 weeks.
Corn Planting Dates by City
| City | Direct sow |
|---|---|
| Baltimore | Mar 24 – Apr 7 |
| Columbia | Apr 10 – Apr 24 |
| Germantown | Apr 14 – Apr 28 |
| Silver Spring | Apr 10 – Apr 24 |
| Frederick | Apr 2 – Apr 16 |
| Waldorf | Apr 3 – Apr 17 |
| Glen Burnie | Apr 10 – Apr 24 |
| Gaithersburg | Apr 1 – Apr 15 |
| Rockville | Apr 1 – Apr 15 |
| Ellicott City | Apr 10 – Apr 24 |
| Dundalk | Mar 24 – Apr 7 |
| Bethesda | Apr 9 – Apr 23 |
| Bowie | Apr 22 – May 6 |
| Towson | Apr 2 – Apr 16 |
| Aspen Hill | Apr 1 – Apr 15 |
| Wheaton | Apr 1 – Apr 15 |
| Bel Air South | Apr 10 – Apr 24 |
| Gwynn Oak | Apr 2 – Apr 16 |
| Potomac | Apr 1 – Apr 15 |
| Severn | Apr 10 – Apr 24 |
| North Bethesda | Apr 1 – Apr 15 |
| Catonsville | Mar 24 – Apr 7 |
| Annapolis | Mar 27 – Apr 10 |
| Hagerstown | Apr 11 – Apr 25 |
| Essex | Mar 24 – Apr 7 |
| Hanover | Apr 10 – Apr 24 |
| Woodlawn | Apr 2 – Apr 16 |
| Severna Park | Mar 27 – Apr 10 |
| Odenton | Apr 10 – Apr 24 |
| Saint Charles | Apr 3 – Apr 17 |
Showing the 30 most populous of 151 Maryland cities. Dates are estimates from each city's NOAA frost normals and university extension timing guidelines. See all Maryland cities.
Frequently Asked Questions
When should I plant corn in Maryland?
In a typical Maryland location, sow outdoors Apr 3 – Apr 17. Across the state, the outdoor planting window starts as early as Mar 22 in California and as late as Apr 24 in Westminster.
When is the last frost in Maryland?
The average last spring frost in Maryland ranges from March 22 in California to April 24 in Westminster, based on NOAA 1991–2020 climate normals.
How long do corn take to grow?
Corn typically take 60–100 days from planting to harvest. Direct sow at last frost to 2 weeks after, once soil reaches 60F; does not transplant well. Succession sow every 2 weeks.
Other Crops in Maryland
- Tomatoes
- Peppers
- Eggplant
- Cucumbers
- Zucchini
- Winter Squash
- Pumpkins
- Watermelon
- Cantaloupe
- Green Beans
- Peas
- Lettuce
- Spinach
- Kale
- Arugula
- Swiss Chard
- Broccoli
- Cauliflower
- Cabbage
- Brussels Sprouts
- Carrots
- Beets
- Radishes
- Turnips
- Onions
- Garlic
- Potatoes
- Sweet Potatoes
- Asparagus
- Basil
- Cilantro
- Parsley
- Dill
- Oregano
- Thyme
- Sunflowers
- Zinnias
- Marigolds
- Cosmos
- Nasturtiums
- Dahlias
When to plant corn in other states