When to Plant Sunflowers in Maryland
In a typical Maryland location, sow outdoors Apr 10 – Apr 24. Across the state, the outdoor planting window starts as early as Mar 29 in California and as late as May 1 in Westminster.
Direct sow 1-3 weeks after last frost once soil has warmed; taprooted, resents transplanting.
Sunflowers Planting Dates by City
| City | Direct sow |
|---|---|
| Baltimore | Mar 31 – Apr 14 |
| Columbia | Apr 17 – May 1 |
| Germantown | Apr 21 – May 5 |
| Silver Spring | Apr 17 – May 1 |
| Frederick | Apr 9 – Apr 23 |
| Waldorf | Apr 10 – Apr 24 |
| Glen Burnie | Apr 17 – May 1 |
| Gaithersburg | Apr 8 – Apr 22 |
| Rockville | Apr 8 – Apr 22 |
| Ellicott City | Apr 17 – May 1 |
| Dundalk | Mar 31 – Apr 14 |
| Bethesda | Apr 16 – Apr 30 |
| Bowie | Apr 29 – May 13 |
| Towson | Apr 9 – Apr 23 |
| Aspen Hill | Apr 8 – Apr 22 |
| Wheaton | Apr 8 – Apr 22 |
| Bel Air South | Apr 17 – May 1 |
| Gwynn Oak | Apr 9 – Apr 23 |
| Potomac | Apr 8 – Apr 22 |
| Severn | Apr 17 – May 1 |
| North Bethesda | Apr 8 – Apr 22 |
| Catonsville | Mar 31 – Apr 14 |
| Annapolis | Apr 3 – Apr 17 |
| Hagerstown | Apr 18 – May 2 |
| Essex | Mar 31 – Apr 14 |
| Hanover | Apr 17 – May 1 |
| Woodlawn | Apr 9 – Apr 23 |
| Severna Park | Apr 3 – Apr 17 |
| Odenton | Apr 17 – May 1 |
| Saint Charles | Apr 10 – Apr 24 |
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 sunflowers in Maryland?
In a typical Maryland location, sow outdoors Apr 10 – Apr 24. Across the state, the outdoor planting window starts as early as Mar 29 in California and as late as May 1 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 sunflowers take to grow?
Sunflowers typically take 70–100 days from planting to harvest. Direct sow 1-3 weeks after last frost once soil has warmed; taprooted, resents transplanting.
Other Crops in Maryland
- Tomatoes
- Peppers
- Eggplant
- Cucumbers
- Zucchini
- Winter Squash
- Pumpkins
- Watermelon
- Cantaloupe
- Corn
- 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
- Zinnias
- Marigolds
- Cosmos
- Nasturtiums
- Dahlias
When to plant sunflowers in other states