When to Plant Swiss Chard in Maryland
In a typical Maryland location, sow outdoors Mar 13 – Mar 27. Across the state, the outdoor planting window starts as early as Mar 1 in California and as late as Apr 3 in Westminster.
Fairly cold-hardy; direct sow 1-3 weeks before last frost. Tolerates light frost in fall too.
Swiss Chard Planting Dates by City
| City | Direct sow |
|---|---|
| Baltimore | Mar 3 – Mar 17 |
| Columbia | Mar 20 – Apr 3 |
| Germantown | Mar 24 – Apr 7 |
| Silver Spring | Mar 20 – Apr 3 |
| Frederick | Mar 12 – Mar 26 |
| Waldorf | Mar 13 – Mar 27 |
| Glen Burnie | Mar 20 – Apr 3 |
| Gaithersburg | Mar 11 – Mar 25 |
| Rockville | Mar 11 – Mar 25 |
| Ellicott City | Mar 20 – Apr 3 |
| Dundalk | Mar 3 – Mar 17 |
| Bethesda | Mar 19 – Apr 2 |
| Bowie | Apr 1 – Apr 15 |
| Towson | Mar 12 – Mar 26 |
| Aspen Hill | Mar 11 – Mar 25 |
| Wheaton | Mar 11 – Mar 25 |
| Bel Air South | Mar 20 – Apr 3 |
| Gwynn Oak | Mar 12 – Mar 26 |
| Potomac | Mar 11 – Mar 25 |
| Severn | Mar 20 – Apr 3 |
| North Bethesda | Mar 11 – Mar 25 |
| Catonsville | Mar 3 – Mar 17 |
| Annapolis | Mar 6 – Mar 20 |
| Hagerstown | Mar 21 – Apr 4 |
| Essex | Mar 3 – Mar 17 |
| Hanover | Mar 20 – Apr 3 |
| Woodlawn | Mar 12 – Mar 26 |
| Severna Park | Mar 6 – Mar 20 |
| Odenton | Mar 20 – Apr 3 |
| Saint Charles | Mar 13 – Mar 27 |
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 Swiss chard in Maryland?
In a typical Maryland location, sow outdoors Mar 13 – Mar 27. Across the state, the outdoor planting window starts as early as Mar 1 in California and as late as Apr 3 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 Swiss chard take to grow?
Swiss Chard typically take 50–60 days from planting to harvest. Fairly cold-hardy; direct sow 1-3 weeks before last frost. Tolerates light frost in fall too.
Other Crops in Maryland
- Tomatoes
- Peppers
- Eggplant
- Cucumbers
- Zucchini
- Winter Squash
- Pumpkins
- Watermelon
- Cantaloupe
- Corn
- Green Beans
- Peas
- Lettuce
- Spinach
- Kale
- Arugula
- 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 Swiss chard in other states